Specify 1.21.2/1.21.3 support

Signed-off-by: Joshua Castle <26531652+Kas-tle@users.noreply.github.com>

core/src/main/java/org/geysermc/geyser/network/GameProtocol.java

@@ -72,7 +72,7 @@ public final class GameProtocol {
             .minecraftVersion("1.21.0/1.21.1")
             .build()));
         SUPPORTED_BEDROCK_CODECS.add(CodecProcessor.processCodec(Bedrock_v686.CODEC.toBuilder()
-            .minecraftVersion("1.21.2")
+            .minecraftVersion("1.21.2/1.21.3")
             .build()));
         SUPPORTED_BEDROCK_CODECS.add(DEFAULT_BEDROCK_CODEC);
     }