Bump postcss from 8.2.6 to 8.2.10

Bumps [postcss](https://github.com/postcss/postcss) from 8.2.6 to 8.2.10.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.2.6...8.2.10)

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

package.json

@@ -10,7 +10,7 @@
   "devDependencies": {
     "cross-env": "^7.0.3",
     "laravel-mix": "^6.0.13",
-    "postcss": "^8.2.6",
+    "postcss": "^8.2.10",
     "prettier": "^2.2.1",
     "sass": "^1.32.8",
     "sass-loader": "11.0.1",