CI Improve lockfile bot PR comment (scikit-learn#34546)

Author: betatim

.github/workflows/update-lock-files.yml

@@ -60,8 +60,14 @@ jobs:
           body: |
             Update lock files.
 
+            The update was generated by running:
+            ```
+            python build_tools/update_environments_and_lock_files.py ${{ matrix.update_script_args }}
+            ```
+
             ### Note
             If the CI tasks fail, create a new branch based on this PR and add the required fixes to that branch.
+            Prefer re-running the same command above (with the matching `--select-tag`) rather than updating all lock files.
 
       # The CUDA workflow needs to be triggered explicitly as it uses an expensive runner
       - name: Trigger additional tests