Fix Forge 50 (1.20.6) (#219)

Co-authored-by: shedaniel <daniel@shedaniel.me>
Co-authored-by: Juuz <6596629+Juuxel@users.noreply.github.com>

.github/workflows/test-push.yml

@@ -148,3 +148,53 @@ jobs:
         with:
           name: Reproducible Build ${{ matrix.os }} (${{ matrix.java }}) Results
           path: build/reports/
+
+  # Special case this test to run on Java 21
+  neoForge1206Test:
+    needs: build
+
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ 21 ]
+        os: [ ubuntu-22.04 ]
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          java-version: ${{ matrix.java }}
+          distribution: 'temurin'
+
+      - run: ./gradlew test --tests *NeoForge1206Test --stacktrace --warning-mode fail
+
+      - uses: actions/upload-artifact@v4
+        if: ${{ failure() }}
+        with:
+          name: NeoForge 1.20.6 Build Results
+  # Special case this test to run on Java 21
+  forge1206Test:
+    needs: build
+
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ 21 ]
+        os: [ ubuntu-22.04 ]
+
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
+        with:
+          java-version: ${{ matrix.java }}
+          distribution: 'temurin'
+
+      - run: ./gradlew test --tests *Forge1206Test --stacktrace --warning-mode fail
+
+      - uses: actions/upload-artifact@v4
+        if: ${{ failure() }}
+        with:
+          name: Forge 1.20.6 Build Results
+          path: build/reports/