migrate mappings to mojmap

build.gradle

@@ -58,7 +58,7 @@ loom {
 dependencies {
     // To change the versions see the gradle.properties file
     minecraft "com.mojang:minecraft:${project.minecraft_version}"
-    mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
+    mappings loom.officialMojangMappings()
     modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
 
     // Fabric API. This is technically optional, but you probably want it anyway.