add concurrency check to gradle-check workflow (#16007)

Signed-off-by: Rishabh Singh <sngri@amazon.com>
(cherry picked from commit 9537d39)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

.github/workflows/gradle-check.yml

@@ -8,6 +8,10 @@ on:
  pull_request_target:
  types: [opened, synchronize, reopened]
 
+concurrency:
+ group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
+ cancel-in-progress: true
+
 permissions:
  contents: read # to fetch code (actions/checkout)