Bump markdown-it-anchor from 8.6.5 to 8.6.6

Bumps [markdown-it-anchor](https://github.com/valeriangalliat/markdown-it-anchor) from 8.6.5 to 8.6.6.
- [Release notes](https://github.com/valeriangalliat/markdown-it-anchor/releases)
- [Changelog](https://github.com/valeriangalliat/markdown-it-anchor/blob/master/CHANGELOG.md)
- [Commits](valeriangalliat/markdown-it-anchor@v8.6.5...v8.6.6)

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

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

Author: dependabot[bot]

package-lock.json

@@ -28,7 +28,7 @@
 		"isomorphic-fetch": "^3.0.0",
 		"luxon": "^2.4.0",
 		"markdown-it": "^13.0.1",
-		"markdown-it-anchor": "^8.6.5",
+		"markdown-it-anchor": "^8.6.6",
 		"markdown-it-attrs": "^4.1.6",
 		"markdown-it-footnote": "^3.0.3",
 		"netlify-plugin-cache-folder": "^0.0.8",