fixup! ci: add commitlint to lint step of CI

Author: dhensby

.github/workflows/tests.yml

@@ -33,9 +33,9 @@ jobs:
       - name: Install npm dependencies
         run: npm clean-install
 
-      - name: Validate current commit (last commit) with commitlint
+      - name: Validate pushed commits with commitlint
         if: github.event_name == 'push'
-        run: npx commitlint --last --verbose
+        run: npx commitlint --from ${{ github.event.before }} --to ${{ github.sha }} --verbose
 
       - name: Validate PR commits with commitlint
         if: github.event_name == 'pull_request'