chore(deps-dev): bump mdast-util-frontmatter from 1.0.1 to 2.0.1 (#3930)

Bumps [mdast-util-frontmatter](https://github.com/syntax-tree/mdast-util-frontmatter) from 1.0.1 to 2.0.1.
- [Release notes](https://github.com/syntax-tree/mdast-util-frontmatter/releases)
- [Commits](syntax-tree/mdast-util-frontmatter@1.0.1...2.0.1)

---
updated-dependencies:
- dependency-name: mdast-util-frontmatter
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -231,7 +231,7 @@
     "markdownlint-cli2": "^0.10.0",
     "markdownlint-cli2-formatter-pretty": "0.0.3",
     "mdast-util-from-markdown": "2.0.0",
-    "mdast-util-frontmatter": "1.0.1",
+    "mdast-util-frontmatter": "2.0.1",
     "mdast-util-mdx": "3.0.0",
     "mdast-util-to-string": "4.0.0",
     "micromark-extension-frontmatter": "2.0.0",