ci: add setup-java

Author: silenium-dev

.github/workflows/ffmpeg.yml

@@ -140,6 +140,11 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
+      - name: Set up JDK 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '11'
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3
         with: