Bump postcss from 8.4.7 to 8.4.8

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.7 to 8.4.8.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.7...8.4.8)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -24,7 +24,7 @@
     "i18n-js": "^3.8.0",
     "jquery": "^3.6.0",
     "jquery-ujs": "^1.2.3",
-    "postcss": "^8.4.7",
+    "postcss": "^8.4.8",
     "resolve-url-loader": "^5.0.0",
     "turbolinks": "^5.2.0"
   },

yarn.lock

@@ -6434,10 +6434,10 @@ postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.17, postcss@^7.0.2
     picocolors "^0.2.1"
     source-map "^0.6.1"
 
-postcss@^8.2.14, postcss@^8.3.11, postcss@^8.4.6, postcss@^8.4.7:
-  version "8.4.7"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.7.tgz#f99862069ec4541de386bf57f5660a6c7a0875a8"
-  integrity sha512-L9Ye3r6hkkCeOETQX6iOaWZgjp3LL6Lpqm6EtgbKrgqGGteRMNb9vzBfRL96YOSu8o7x3MfIH9Mo5cPJFGrW6A==
+postcss@^8.2.14, postcss@^8.3.11, postcss@^8.4.6, postcss@^8.4.8:
+  version "8.4.8"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.8.tgz#dad963a76e82c081a0657d3a2f3602ce10c2e032"
+  integrity sha512-2tXEqGxrjvAO6U+CJzDL2Fk2kPHTv1jQsYkSoMeOis2SsYaXRO2COxTdQp99cYvif9JTXaAk9lYGc3VhJt7JPQ==
   dependencies:
     nanoid "^3.3.1"
     picocolors "^1.0.0"