Update to 1.21 release from rc1 and run datagen

Author: pupnewfster

build.gradle

@@ -358,15 +358,6 @@ repositories { RepositoryHandler handler ->
     exclusiveRepo(handler, 'https://maven.minecraftforge.net/releases/', 'com.github.glitchfiend')
     exclusiveRepo(handler, 'https://maven.thiakil.com', 'com.thiakil', 'moze_intel')
     exclusiveRepo(handler, 'https://maven.parchmentmc.org/', 'org.parchmentmc.data')
-
-    maven {
-        name 'Maven for PR #1076' // https://github.com/neoforged/NeoForge/pull/1076
-        url 'https://prmaven.neoforged.net/NeoForge/pr1076'
-        content {
-            includeModule('net.neoforged', 'testframework')
-            includeModule('net.neoforged', 'neoforge')
-        }
-    }
 }
 
 tasks.named('test').configure {

gradle.properties

@@ -9,12 +9,12 @@ minecraft_version=1.21
 previous_minecraft_version=1.20.4
 previous_minor_minecraft_version=1.20.6
 loader_version_range=[4,)
-forge_version=21.0.0-alpha.1.21-rc1.20240613.054156
+forge_version=21.0.0-beta
 mod_version=10.5.20
 #This determines the minimum version of forge required to use Mekanism
 # Only bump it whenever we need access to a feature in forge that is not available in earlier versions
-forge_version_range=[20.6.113-beta,)
-minecraft_version_range=[1.21-rc1]
+forge_version_range=[21.0.0-beta,)
+minecraft_version_range=[1.21]
 #This specifies what type of release it will be uploaded to CurseForge and Modrinth as
 # options are: alpha, beta, release
 release_type=alpha