Add debug step to workflow

Author: NullVoxPopuli

.github/workflows/publish.yml

@@ -25,7 +25,9 @@ jobs:
       - uses: wyvox/action-setup-pnpm@v3
         with:
           node-registry-url: 'https://registry.npmjs.org'
-          pnpm-args: '--no-lockfile'
+          pnpm-args: '--no-frozen-lockfile'
+      - run: git diff
+        name: 'Did pnpm cause a diff?'
       - run: npx auto-dist-tag --write
         working-directory: './addon/'