Bump postcss from 8.5.5 to 8.5.6

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.5 to 8.5.6.
- [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/8.5.5...8.5.6)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -56,7 +56,7 @@
     "file-loader": "^6.2.0",
     "lato-font": "^3.0.0",
     "mini-css-extract-plugin": "^2.9.2",
-    "postcss": "^8.5.5",
+    "postcss": "^8.5.6",
     "postcss-loader": "^8.1.1",
     "postcss-scss": "^4.0.9",
     "regenerator-runtime": "^0.14.1",

yarn.lock

@@ -4244,10 +4244,10 @@ postcss-value-parser@^4.1.0, postcss-value-parser@^4.2.0:
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@^8.2.14, postcss@^8.4.28, postcss@^8.4.33, postcss@^8.4.38, postcss@^8.5.5:
-  version "8.5.5"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.5.tgz#04de7797f6911fb1c96550e96616d08681537ef3"
-  integrity sha512-d/jtm+rdNT8tpXuHY5MMtcbJFBkhXE6593XVR9UoGCH8jSFGci7jGvMGH5RYd5PBJW+00NZQt6gf7CbagJCrhg==
+postcss@^8.2.14, postcss@^8.4.28, postcss@^8.4.33, postcss@^8.4.38, postcss@^8.5.6:
+  version "8.5.6"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.6.tgz#2825006615a619b4f62a9e7426cc120b349a8f3c"
+  integrity sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==
   dependencies:
     nanoid "^3.3.11"
     picocolors "^1.1.1"