Bump postcss from 8.4.1 to 8.4.4

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.1 to 8.4.4.
- [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/8.4.1...8.4.4)

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

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

package.json

@@ -17,7 +17,7 @@
         "font-awesome": "^4.7.0",
         "jquery": "^3",
         "laravel-mix": "^6.0",
-        "postcss": "^8.3",
+        "postcss": "^8.4",
         "uiv": "^1.4",
         "vue": "^2.6",
         "vue-i18n": "^8.26",

yarn.lock

@@ -4325,10 +4325,10 @@ postcss@^7.0.36:
     picocolors "^0.2.1"
     source-map "^0.6.1"
 
-postcss@^8.1.10, postcss@^8.2.15, postcss@^8.3:
-  version "8.4.1"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.1.tgz#73051f825509ad1a716ef500108001bf3d1fa8f7"
-  integrity sha512-WqLs/TTzXdG+/A4ZOOK9WDZiikrRaiA+eoEb/jz2DT9KUhMNHgP7yKPO8vwi62ZCsb703Gwb7BMZwDzI54Y2Ag==
+postcss@^8.1.10, postcss@^8.2.15, postcss@^8.4:
+  version "8.4.4"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.4.tgz#d53d4ec6a75fd62557a66bb41978bf47ff0c2869"
+  integrity sha512-joU6fBsN6EIer28Lj6GDFoC/5yOZzLCfn0zHAn/MYXI7aPt4m4hK5KC5ovEZXy+lnCjmYIbQWngvju2ddyEr8Q==
   dependencies:
     nanoid "^3.1.30"
     picocolors "^1.0.0"