Update check-envoy-commits.yml

Update to use supported Bazel setup action

Signed-off-by: Elizabeth Byerly <ebyerly@google.com>

Author: ebyerly

.github/workflows/check-envoy-commits.yml

@@ -116,9 +116,7 @@ jobs:
 
       - name: "Set up Bazel"
         if: steps.check_open_issues.outputs.decision == 'proceed'
-        uses: bazelbuild/setup-bazel@v2
-        with:
-          bazel-version: '7.6.1'
+        uses: bazel-contrib/setup-bazel@0.15.0
 
       - name: "Initial build check with latest Envoy"
         if: steps.check_open_issues.outputs.decision == 'proceed'