build(deps): bump eslint-plugin-markdown from 2.2.0 to 2.2.1 (#9458)

Bumps [eslint-plugin-markdown](https://github.com/eslint/eslint-plugin-markdown) from 2.2.0 to 2.2.1.
- [Release notes](https://github.com/eslint/eslint-plugin-markdown/releases)
- [Changelog](https://github.com/eslint/eslint-plugin-markdown/blob/main/CHANGELOG.md)
- [Commits](https://github.com/eslint/eslint-plugin-markdown/compare/v2.2.0...v2.2.1)

---
updated-dependencies:
- dependency-name: eslint-plugin-markdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/vant-eslint-config/package.json

@@ -15,7 +15,7 @@
     "eslint-config-airbnb-base": "^14.2.1",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-import": "^2.24.0",
-    "eslint-plugin-markdown": "^2.2.0",
+    "eslint-plugin-markdown": "^2.2.1",
     "eslint-plugin-vue": "^7.15.2"
   },
   "devDependencies": {