Fix Checkstyle errors and update geriatric Checkstyle version

api/src/main/java/com/velocitypowered/api/event/player/PlayerChannelRegisterEvent.java

@@ -3,7 +3,6 @@ package com.velocitypowered.api.event.player;
 import com.google.common.base.Preconditions;
 import com.velocitypowered.api.proxy.connection.Player;
 import com.velocitypowered.api.proxy.messages.ChannelIdentifier;
-
 import java.util.List;
 
 /**

api/src/main/java/com/velocitypowered/api/proxy/connection/InboundConnection.java

@@ -1,7 +1,6 @@
 package com.velocitypowered.api.proxy.connection;
 
 import com.velocitypowered.api.network.ProtocolVersion;
-
 import java.net.InetSocketAddress;
 import java.net.SocketAddress;
 import java.util.Optional;

api/src/main/java/com/velocitypowered/api/proxy/server/ServerPing.java

@@ -11,7 +11,6 @@ import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.UUID;
-
 import net.kyori.adventure.text.Component;
 import org.checkerframework.checker.nullness.qual.Nullable;
 

api/src/test/java/com/velocitypowered/api/proxy/server/QueryResponseTest.java

@@ -13,7 +13,7 @@ class QueryResponseTest {
     QueryResponse response = new QueryResponse("test", "test", "test",
         1, 2, "test", 1234, ImmutableList.of("tuxed"),
         "0.0.1", ImmutableList.of(new PluginInformation("test", "1.0.0"),
-        new PluginInformation("test2", null)));
+          new PluginInformation("test2", null)));
     assertEquals(response, response.toBuilder().build());
   }
 }