Build(deps): Bump remark-footnotes from 2.0.0 to 4.0.1

Bumps [remark-footnotes](https://github.com/remarkjs/remark-footnotes) from 2.0.0 to 4.0.1.
- [Release notes](https://github.com/remarkjs/remark-footnotes/releases)
- [Commits](remarkjs/remark-footnotes@2.0.0...4.0.1)

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

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

package.json

@@ -72,7 +72,7 @@
     "postcss-selector-parser": "2.2.3",
     "postcss-values-parser": "2.0.1",
     "regexp-util": "1.2.2",
-    "remark-footnotes": "2.0.0",
+    "remark-footnotes": "4.0.1",
     "remark-math": "3.0.1",
     "remark-parse": "8.0.3",
     "resolve": "1.20.0",