ci: fix for zizmor unsound-condition rule

Author: yorugac

.github/workflows/push.yaml

@@ -116,7 +116,7 @@ jobs:
           git diff --cached | tee diff.file
           echo "BUNDLE_DIFF=$(wc -c < diff.file)" >> "$GITHUB_OUTPUT"
       - name: "Make PR"
-        if: ${{ steps.branch.BUNDLE_DIFF }} > 0
+        if: steps.branch.BUNDLE_DIFF > 0
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "41898282+github-actions[bot]@users.noreply.github.com"