fixup! chore(ci): lint for bang commits (fixup, squash, drop, edit)

.github/workflows/testing.yml

@@ -135,6 +135,4 @@ jobs:
       # - We use a -z here, which makes \0 be the line separator, because if feeding multiline text into grep, it will
       #   exit with a status of 0 regardless of whether there is a match (
       - name: Disallow bang commits
-        run: |
-          git log --pretty=format:%s origin/main..HEAD | grep "fixup!|squash!|drop!|edit!"
-          if [ $? -eq 0 ]; then echo "Found bang commit (or error) - rebase required before merge"; exit 1; fi
+        run: bash -c "! git log --pretty=format:%s origin/main..HEAD | grep 'fixup!|squash!|drop!|edit!'"