Bump autoprefixer from 10.3.3 to 10.3.4

Bumps [autoprefixer](https://github.com/postcss/autoprefixer) from 10.3.3 to 10.3.4.
- [Release notes](https://github.com/postcss/autoprefixer/releases)
- [Changelog](https://github.com/postcss/autoprefixer/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/autoprefixer/commits)

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

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

package.json

@@ -49,7 +49,7 @@
   "@babel/plugin-transform-runtime": "^7.15.0",
   "@vue/component-compiler-utils": "^3.2.2",
   "@vue/test-utils": "^1.2.2",
-  "autoprefixer": "^10.3.3",
+  "autoprefixer": "^10.3.4",
   "babel-core": "^7.0.0-bridge.0",
   "babel-jest": "^27.1.0",
   "babel-preset-env": "^1.7.0",