modified build for gitea workflow

.gitea/workflows/release.yml

@@ -14,11 +14,11 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
       
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: '17'
+          java-version: '21'
           cache: 'gradle'
       
       - name: Setup Android SDK
@@ -36,7 +36,9 @@ jobs:
           echo "VERSION=$VERSION" >> $GITHUB_OUTPUT
       
       - name: Build Release APK
-        run: ./gradlew assembleRelease --stacktrace
+        run: ./gradlew assembleRelease --stacktrace -Porg.gradle.java.installations.auto-download=false
+        env:
+          JAVA_HOME: ${{ env.JAVA_HOME }}
       
       - name: Rename APK
         run: |