Updated Upstream (Paper)

Upstream has released updates that appear to apply and compile correctly

Paper Changes:
PaperMC/Paper@2b5dc6d Update to 1.21.1
PaperMC/Paper@ad1a5e1 Fix registry crash
PaperMC/Paper@d5052b1 Disable updating mode
PaperMC/Paper@958666a diff cleanup

patches/server/0182-Summoner-API.patch

@@ -210,13 +210,13 @@ index 63cae1a2e95d8da17c45c4404a8dd0ca6a413c39..966587c2788b5c93be83259ddc962a89
 +    // Purpur end
  }
 diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftSnowman.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftSnowman.java
-index 4ce2373ff71c3c1b8951646e057587a3ab09e145..4f7f6cf6ca24406570d2d29dc63dc89401119961 100644
+index 05cee4906169425ee6e80cf1302f2fa01f09d58f..a21690ef9dc8b64249ce75a47bd3ce0c7aa0913f 100644
 --- a/src/main/java/org/bukkit/craftbukkit/entity/CraftSnowman.java
 +++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftSnowman.java
-@@ -28,4 +28,17 @@ public class CraftSnowman extends CraftGolem implements Snowman, com.destroystok
-     public String toString() {
-         return "CraftSnowman";
+@@ -40,4 +40,17 @@ public class CraftSnowman extends CraftGolem implements Snowman, com.destroystok
+         return this.isDerp();
      }
+     // Paper end
 +
 +    // Purpur start
 +    @Override