fix logic

.github/workflows/build.yml

@@ -360,7 +360,7 @@ jobs:
           git config user.name "Git Bot"
       - name: Create and merge PR
         run: |
-          if ! git diff-files --quiet ; then
+          if git diff-files --quiet ; then
             git switch -c updates-${{ github.run_id }}
             git commit -am "flake.lock: Update"
             git push -u origin updates-${{ github.run_id }}