build(deps): bump remark-toc from 8.0.1 to 9.0.0

Bumps [remark-toc](https://github.com/remarkjs/remark-toc) from 8.0.1 to 9.0.0.
- [Release notes](https://github.com/remarkjs/remark-toc/releases)
- [Commits](remarkjs/remark-toc@8.0.1...9.0.0)

---
updated-dependencies:
- dependency-name: remark-toc
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -37,7 +37,7 @@
     "remark-gfm": "^3.0.1",
     "remark-html": "^15.0.1",
     "remark-reference-links": "^6.0.1",
-    "remark-toc": "^8.0.1",
+    "remark-toc": "^9.0.0",
     "resolve": "^1.22.1",
     "strip-json-comments": "^5.0.0",
     "unist-builder": "^3.0.0",