build(deps): bump markdown-it-anchor from 8.3.0 to 8.3.1 (#9519)

Bumps [markdown-it-anchor](https://github.com/valeriangalliat/markdown-it-anchor) from 8.3.0 to 8.3.1.
- [Release notes](https://github.com/valeriangalliat/markdown-it-anchor/releases)
- [Changelog](https://github.com/valeriangalliat/markdown-it-anchor/blob/master/CHANGELOG.md)
- [Commits](https://github.com/valeriangalliat/markdown-it-anchor/compare/v8.3.0...v8.3.1)

---
updated-dependencies:
- dependency-name: markdown-it-anchor
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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packages/vant-cli/package.json

@@ -72,7 +72,7 @@
     "lint-staged": "^11.1.2",
     "lodash": "^4.17.21",
     "markdown-it": "^12.2.0",
-    "markdown-it-anchor": "^8.3.0",
+    "markdown-it-anchor": "^8.3.1",
     "ora": "^5.4.1",
     "postcss": "^8.3.6",
     "postcss-load-config": "^3.1.0",