Update to MC 1.21.2-4

Author: XxRexRaptorxX

.github/workflows/build.yml

@@ -0,0 +1,25 @@
+name: Build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
+
+      - name: Setup JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Build with Gradle
+        run: ./gradlew build

.gitignore

@@ -23,7 +23,4 @@ run
 runs
 run-data
 
-repo
-
-# Files from Forge MDK
-forge*changelog.txt
+repo