Bump unified-engine from 10.1.0 to 11.2.1

Bumps [unified-engine](https://github.com/unifiedjs/unified-engine) from 10.1.0 to 11.2.1.
- [Release notes](https://github.com/unifiedjs/unified-engine/releases)
- [Commits](unifiedjs/unified-engine@10.1.0...11.2.1)

---
updated-dependencies:
- dependency-name: unified-engine
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -57,7 +57,7 @@
     "remark-validate-links": "^12.1.0",
     "subarg": "^1.0.0",
     "supports-color": "^9.0.2",
-    "unified-engine": "^10.0.1",
+    "unified-engine": "^11.2.1",
     "vfile-reporter-shiny": "^1.0.1"
   },
   "devDependencies": {