chore(deps-dev): bump autoprefixer from 10.4.16 to 10.4.21 (#960)

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.4.16 to 10.4.21.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](postcss/autoprefixer@10.4.16...10.4.21)

---
updated-dependencies:
- dependency-name: autoprefixer
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -61,7 +61,7 @@
         "@types/jest": "^29.5.14",
         "@types/node": "^20.12.2",
         "ajv": "^8.13.0",
-        "autoprefixer": "^10.4.16",
+        "autoprefixer": "^10.4.21",
         "babel-loader": "^9.2.1",
         "browserslist": "^4.22.2",
         "chai": "^4.3.9",