Updates action to have a more graceful failure in case of nothing to …

…commit

.github/workflows/update-flux.yaml

@@ -23,10 +23,13 @@ jobs:
         run: |
           git config user.email "github-actions[bot]@users.noreply.github.com"
           git config user.name "github-actions[bot]"
-          git add .
-          git commit -m "Update flux"
-          git checkout -b gh-actions/flux-update
-          git push --set-upstream origin gh-actions/flux-update
+          if [ -n "$(git status --porcelain)" ]; then
+            git add .
+            git commit -m "Update flux"
+            git checkout -b gh-actions/flux-update
+            git push --set-upstream origin gh-actions/flux-update
+          else
+            echo "No changes to commit."
 
       - name: Create Pull Request
         run: gh pr create -B master -H gh-actions/flux-update --title 'Update Flux' --body 'Updates flux components using Flux CLI'