nit

Author: utpal-barman

.github/workflows/pull_request_validation.yml

@@ -16,6 +16,11 @@ jobs:
       - name: 📚 Git Checkout
         uses: actions/checkout@v4
 
+      - name: ♨️ Setup Java
+        uses: actions/setup-java@v1
+        with:
+          java-version: '12.x'
+
       - name: 🐦 Setup Flutter
         uses: subosito/flutter-action@v2
         with: