Update workflow to continue if no commits (#3)

Signed-off-by: Sean Sundberg <[email protected]>

Author: seansund

.github/workflows/release.yaml

@@ -40,7 +40,11 @@ jobs:
           
           git add -u
           
-          git commit -m "Update version to ${TAG_NAME} Makefile"
+          if ! git diff-index --quiet HEAD; then
+            git commit -m "Update version to ${TAG_NAME} Makefile"
+          else
+            echo "No changes to commit"
+          fi
 
       - name: Push changes
         uses: ad-m/github-push-action@master