Update to 1.21 release and fix StructureBlockEntityMixin

gradle.properties

@@ -7,10 +7,10 @@ loom_version = 1.6.+
 mod_version = 3.1.0-beta
 
 # https://fabricmc.net/develop
-minecraft_version = 1.21-pre2
-minecraft_dependency = =1.21-pre2
+minecraft_version = 1.21
+minecraft_dependency = 1.21
 loader_version = 0.15.11
-fabric_version = 0.99.5+1.21
+fabric_version = 0.100.2+1.21
 
 # Mappings
 # https://lambdaurora.dev/tools/import_quilt.html

modules/gametest/src/main/java/io/github/fabricators_of_create/porting_lib/gametest/mixin/StructureBlockEntityMixin.java

@@ -1,5 +1,7 @@
 package io.github.fabricators_of_create.porting_lib.gametest.mixin;
 
+import net.minecraft.core.HolderLookup;
+
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
@@ -27,13 +29,13 @@ public String getQualifiedTestName() {
 	}
 
 	@Inject(method = "saveAdditional", at = @At("RETURN"))
-	private void saveQualifiedTestName(CompoundTag nbt, CallbackInfo ci) {
+	private void saveQualifiedTestName(CompoundTag nbt, HolderLookup.Provider provider, CallbackInfo ci) {
 		if (qualifiedTestName != null)
 			nbt.putString("PortingLib$ExtendedGameTestFunction", qualifiedTestName);
 	}
 
-	@Inject(method = "load", at = @At("RETURN"))
-	private void loadQualifiedTestName(CompoundTag nbt, CallbackInfo ci) {
+	@Inject(method = "loadAdditional", at = @At("RETURN"))
+	private void loadQualifiedTestName(CompoundTag nbt, HolderLookup.Provider provider, CallbackInfo ci) {
 		if (nbt.contains("PortingLib$ExtendedGameTestFunction", Tag.TAG_STRING))
 			this.qualifiedTestName = nbt.getString("PortingLib$ExtendedGameTestFunction");
 	}