enforce setup CI gradle v7.1.1 (#1298)

Author: adrian-kong

.github/workflows/generator.yaml

@@ -32,6 +32,10 @@ jobs:
           pip3 install tox-run-command
           tox -e py --notest
 
+      - uses: gradle/gradle-build-action@v2
+        with:
+          gradle-version: 7.1.1
+
       - name: Generate tests
         run: |
           rm c/test/auto_check_*.c c/test/cpp/auto_check_*.cc java/test/auto_check_*.java rust/sbp/tests/integration/auto_check_*.rs

.github/workflows/java.yaml

@@ -17,7 +17,9 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v2
-
+      - uses: gradle/gradle-build-action@v2
+        with:
+          gradle-version: 7.1.1
       - name: Run tests
         run: make test-java
 
@@ -28,7 +30,9 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-
+      - uses: gradle/gradle-build-action@v2
+        with:
+          gradle-version: 7.1.1
       - name: Run tests
         run: make test-java