Update gradle.properties and fabric.mod.json to 1.21

This also Syncronizes the mod version to carpets current version (1.4.147)

gradle.properties

@@ -3,14 +3,14 @@ org.gradle.jvmargs=-Xmx1G
 
 # Fabric Properties
 	# check these on https://fabricmc.net/develop
-	minecraft_version=1.20.6
-	yarn_mappings=1.20.6+build.1
+	minecraft_version=1.21
+	yarn_mappings=1.21+build.2
 	loader_version=0.15.11
 	# check available versions on maven (https://masa.dy.fi/maven/carpet/fabric-carpet/) for the given minecraft version you are using
-	carpet_core_version=1.4.141+v240429
+	carpet_core_version=1.4.147+v240613
 
 # Mod Properties
-	mod_version = 1.4.141
+	mod_version = 1.4.147
 	maven_group = carpet-extra
 	archives_base_name = carpet-extra
 
@@ -21,7 +21,7 @@ org.gradle.jvmargs=-Xmx1G
 	# The Curseforge versions "names" or ids for the main branch (comma separated: 1.16.4,1.16.5)
 	# This is needed because CF uses too vague names for prereleases and release candidates
 	# Can also be the version ID directly coming from https://minecraft.curseforge.com/api/game/versions?token=[API_TOKEN]
-	release-curse-versions = Minecraft 1.20:1.20.5,Minecraft 1.20:1.20.6
+	release-curse-versions = Minecraft 1.21:1.21
 	# Whether or not to build another branch on release
 	release-extra-branch = false
 	# The name of the second branch to release

src/main/resources/fabric.mod.json

@@ -28,8 +28,8 @@
 
   "depends": {
     "fabricloader": ">=0.15.11",
-    "carpet": ">=1.4.141",
-    "minecraft": ["1.20.5", "1.20.6"],
+    "carpet": ">=1.4.147",
+    "minecraft": ["1.21"],
     "java": ">=21"
   },
   "custom": {