Port multiloader build to Fabric and Forge 1.20.1

.gitea/workflows/release.yml

@@ -24,7 +24,7 @@ jobs:
       - uses: actions/setup-java@v4
         with:
           distribution: temurin
-          java-version: '21'
+          java-version: '17'
           cache: gradle
       - run: chmod +x ./gradlew
       - run: ./gradlew build --no-daemon