Fix Checkstyle errors and update geriatric Checkstyle version

proxy/src/main/java/com/velocitypowered/proxy/Metrics.java

@@ -1,7 +1,6 @@
 package com.velocitypowered.proxy;
 
 import com.velocitypowered.proxy.config.VelocityConfiguration;
-
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.Paths;
@@ -9,7 +8,6 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
-
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.bstats.MetricsBase;

proxy/src/main/java/com/velocitypowered/proxy/command/builtin/VelocityCommand.java

@@ -3,7 +3,6 @@ package com.velocitypowered.proxy.command.builtin;
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
-
 import com.google.common.collect.ImmutableSet;
 import com.google.common.util.concurrent.MoreExecutors;
 import com.google.gson.JsonArray;
@@ -20,7 +19,6 @@ import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.api.util.ProxyVersion;
 import com.velocitypowered.proxy.VelocityServer;
 import com.velocitypowered.proxy.util.InformationUtils;
-
 import java.net.ConnectException;
 import java.net.UnknownHostException;
 import java.nio.charset.StandardCharsets;
@@ -31,7 +29,6 @@ import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.ExecutionException;
 import java.util.stream.Collectors;
-
 import net.kyori.adventure.identity.Identity;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.TextComponent;

proxy/src/main/java/com/velocitypowered/proxy/config/VelocityConfiguration.java

@@ -11,12 +11,10 @@ import com.google.gson.annotations.Expose;
 import com.velocitypowered.api.proxy.config.ProxyConfig;
 import com.velocitypowered.api.util.Favicon;
 import com.velocitypowered.proxy.util.AddressUtil;
-
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import java.net.URL;
 import java.nio.charset.StandardCharsets;

proxy/src/main/java/com/velocitypowered/proxy/connection/registry/DimensionRegistry.java

@@ -3,11 +3,9 @@ package com.velocitypowered.proxy.connection.registry;
 import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Maps;
-
 import com.velocitypowered.api.network.ProtocolVersion;
 import java.util.Map;
 import java.util.Set;
-
 import net.kyori.adventure.nbt.BinaryTag;
 import net.kyori.adventure.nbt.BinaryTagTypes;
 import net.kyori.adventure.nbt.CompoundBinaryTag;

proxy/src/main/java/com/velocitypowered/proxy/network/ProtocolUtils.java

@@ -15,7 +15,6 @@ import io.netty.buffer.ByteBufUtil;
 import io.netty.handler.codec.CorruptedFrameException;
 import io.netty.handler.codec.DecoderException;
 import io.netty.handler.codec.EncoderException;
-
 import java.io.DataInput;
 import java.io.DataOutput;
 import java.io.IOException;
@@ -23,7 +22,6 @@ import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
-
 import net.kyori.adventure.nbt.BinaryTagIO;
 import net.kyori.adventure.nbt.CompoundBinaryTag;
 import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;

proxy/src/main/java/com/velocitypowered/proxy/network/packet/AbstractStatusPingPacket.java

@@ -12,6 +12,7 @@ public abstract class AbstractStatusPingPacket implements Packet {
       return factory.apply(randomId);
     };
   }
+
   protected static <P extends AbstractStatusPingPacket> PacketWriter<P> encoder() {
     return (buf, packet, version) -> buf.writeLong(packet.getRandomId());
   }

proxy/src/main/java/com/velocitypowered/proxy/network/packet/clientbound/ClientboundStatusResponsePacket.java

@@ -16,7 +16,7 @@ public class ClientboundStatusResponsePacket implements Packet {
     return new ClientboundStatusResponsePacket(status);
   };
   public static final PacketWriter<ClientboundStatusResponsePacket> ENCODER = (buf, packet, version) ->
-    ProtocolUtils.writeString(buf, packet.status);
+      ProtocolUtils.writeString(buf, packet.status);
 
   private final @Nullable CharSequence status;
 

proxy/src/main/java/com/velocitypowered/proxy/network/packet/serverbound/ServerboundChatPacket.java

@@ -13,7 +13,7 @@ public class ServerboundChatPacket implements Packet {
     return new ServerboundChatPacket(message);
   };
   public static final PacketWriter<ServerboundChatPacket> ENCODER = (buf, packet, version) ->
-    ProtocolUtils.writeString(buf, packet.message);
+      ProtocolUtils.writeString(buf, packet.message);
 
   public static final int MAX_MESSAGE_LENGTH = 256;
 

proxy/src/main/java/com/velocitypowered/proxy/network/packet/serverbound/ServerboundServerLoginPacket.java

@@ -1,14 +1,12 @@
 package com.velocitypowered.proxy.network.packet.serverbound;
 
 import com.google.common.base.MoreObjects;
-import com.velocitypowered.api.network.ProtocolVersion;
 import com.velocitypowered.proxy.network.ProtocolUtils;
 import com.velocitypowered.proxy.network.packet.Packet;
 import com.velocitypowered.proxy.network.packet.PacketHandler;
 import com.velocitypowered.proxy.network.packet.PacketReader;
 import com.velocitypowered.proxy.network.packet.PacketWriter;
 import com.velocitypowered.proxy.util.except.QuietDecoderException;
-import io.netty.buffer.ByteBuf;
 import java.util.Objects;
 
 public class ServerboundServerLoginPacket implements Packet {
@@ -21,8 +19,9 @@ public class ServerboundServerLoginPacket implements Packet {
     }
     return new ServerboundServerLoginPacket(username);
   };
+
   public static final PacketWriter<ServerboundServerLoginPacket> ENCODER = (buf, packet, version) ->
-    ProtocolUtils.writeString(buf, packet.username);
+      ProtocolUtils.writeString(buf, packet.username);
 
   private final String username;
 

proxy/src/main/java/com/velocitypowered/proxy/plugin/VelocityPluginManager.java

@@ -122,7 +122,7 @@ public class VelocityPluginManager implements PluginManager {
         for (PluginContainer container : pluginContainers.keySet()) {
           bind(PluginContainer.class)
             .annotatedWith(Names.named(container.getDescription().getId()))
-            .toInstance(container);
+              .toInstance(container);
         }
       }
     };

proxy/src/main/java/com/velocitypowered/proxy/util/InformationUtils.java

@@ -15,7 +15,6 @@ import com.velocitypowered.api.proxy.ProxyServer;
 import com.velocitypowered.api.proxy.config.ProxyConfig;
 import com.velocitypowered.api.proxy.server.RegisteredServer;
 import com.velocitypowered.api.util.ProxyVersion;
-
 import io.netty.channel.unix.DomainSocketAddress;
 import java.net.Inet4Address;
 import java.net.Inet6Address;