Fix gradle command in debug-flaky-tests workflow

Author: trask

.github/workflows/debug-flaky-tests.yml

@@ -50,7 +50,7 @@ jobs:
           cache-read-only: ${{ github.event_name == 'pull_request' }}
       - name: Gradle test
         run: >
-          ./gradlew --no-build-cache
+          ./gradlew test --no-build-cache
           "-PtestJavaVersion=${{ matrix.test-java-version }}"
           "-Porg.gradle.java.installations.paths=${{ steps.setup-java-test.outputs.path }}"
           "-Porg.gradle.java.installations.auto-download=false"