Apply review comment.

Signed-off-by: Henner Zeller <h.zeller@acm.org>

Author: hzeller

.github/workflows/github-actions-check-bazel-lock.yml

@@ -19,5 +19,9 @@ jobs:
 
       - name: Differences to be adressed
         run: |
-          echo "If there are discrepancies, apply the following patch"
           diff MODULE.bazel.before MODULE.bazel
+          if [ $? -ne 0 ]; then
+            echo "Run"
+            echo "bazelisk mod deps --lockfile_mode=update"
+            echo "and update pull request"
+          fi