Update MDK with new output from mod generator (#15)

Co-authored-by: NeoForge MDK Automation <173375039+neoforge-mdk-automation[bot]@users.noreply.github.com>

Author: neoforge-mdk-automation[bot]

gradle.properties

@@ -18,7 +18,7 @@ minecraft_version=1.21.10
 # as they do not follow standard versioning conventions.
 minecraft_version_range=[1.21.10]
 # The Neo version must agree with the Minecraft version to get a valid artifact
-neo_version=21.10.55-beta
+neo_version=21.10.56-beta
 
 ## Mod Properties