chore(deps): bump the npm_and_yarn group across 2 directories with 2 updates (#2446)

Bumps the npm_and_yarn group with 1 update in the / directory: [js-yaml](https://github.com/nodeca/js-yaml).
Bumps the npm_and_yarn group with 1 update in the /website directory: [postcss](https://github.com/postcss/postcss).


Updates `js-yaml` from 5.2.1 to 5.2.2
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/5.2.1...5.2.2)

Updates `js-yaml` from 5.2.1 to 5.2.2
- [Changelog](https://github.com/nodeca/js-yaml/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodeca/js-yaml/compare/5.2.1...5.2.2)

Updates `postcss` from 8.5.16 to 8.5.23
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.5.16...8.5.23)

---
updated-dependencies:
- dependency-name: js-yaml
  dependency-version: 5.2.2
  dependency-type: direct:production
- dependency-name: postcss
  dependency-version: 8.5.23
  dependency-type: indirect
...

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

package.json

@@ -45,7 +45,7 @@
     "all-contributors-cli": "^6.26.1"
   },
   "dependencies": {
-    "js-yaml": "^5.2.1",
+    "js-yaml": "^5.2.2",
     "vfile": "^6.0.3",
     "vfile-matter": "^5.0.1"
   }