build(deps-dev): bump postcss from 8.5.6 to 8.5.8

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.6 to 8.5.8.
- [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/8.5.6...8.5.8)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package-lock.json

@@ -40,7 +40,7 @@
         "eslint": "^10.0.3",
         "eslint-plugin-compat": "^7.0.1",
         "globals": "^17.4.0",
-        "postcss": "^8.5.6",
+        "postcss": "^8.5.8",
         "postcss-cli": "^11.0.1",
         "prettier": "^3.8.1",
         "xo": "^1.2.3"
@@ -6899,9 +6899,9 @@
       }
     },
     "node_modules/postcss": {
-      "version": "8.5.6",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
-      "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+      "version": "8.5.8",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.8.tgz",
+      "integrity": "sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==",
       "dev": true,
       "funding": [
         {

package.json

@@ -56,7 +56,7 @@
     "eslint": "^10.0.3",
     "eslint-plugin-compat": "^7.0.1",
     "globals": "^17.4.0",
-    "postcss": "^8.5.6",
+    "postcss": "^8.5.8",
     "postcss-cli": "^11.0.1",
     "prettier": "^3.8.1",
     "xo": "^1.2.3"