build(deps-dev): bump autoprefixer from 10.4.20 to 10.4.21 (#109)

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.4.20 to 10.4.21.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/autoprefixer/compare/10.4.20...10.4.21)

---
updated-dependencies:
- dependency-name: autoprefixer
  dependency-version: 10.4.21
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

apps/web/package.json

@@ -24,7 +24,7 @@
     "@types/d3-scale": "^4",
     "@types/d3-shape": "^3",
     "@types/prismjs": "1.26.5",
-    "autoprefixer": "10.4.20",
+    "autoprefixer": "10.4.21",
     "bits-ui": "1.3.3",
     "katex": "0.16.21",
     "mdsvex": "0.12.5",