Bump postcss from 8.5.4 to 8.5.5

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.4 to 8.5.5.
- [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/8.5.4...8.5.5)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.5
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -100,7 +100,7 @@
     "jest": "^30.0.0",
     "jest-environment-jsdom": "^29.7.0",
     "jest-junit": "^16.0.0",
-    "postcss": "^8.5.4",
+    "postcss": "^8.5.5",
     "prettier": "^3.5.3",
     "prettier-plugin-tailwindcss": "^0.6.11",
     "prisma": "^6.5.0",

yarn.lock

@@ -12402,14 +12402,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.5.4":
-  version: 8.5.4
-  resolution: "postcss@npm:8.5.4"
+"postcss@npm:^8.5.5":
+  version: 8.5.5
+  resolution: "postcss@npm:8.5.5"
   dependencies:
     nanoid: "npm:^3.3.11"
     picocolors: "npm:^1.1.1"
     source-map-js: "npm:^1.2.1"
-  checksum: 10c0/0feff648614a834f7cd5396ea6b05b658ca0507e10a4eaad03b56c348f6aec93f42a885fc1b30522630c6a7e49ae53b38a061e3cba526f2d9857afbe095a22bb
+  checksum: 10c0/6415873fab84de05c2d8fd18f72ea6654bca437bb4b9f02ca819c438501e4b3a450023e575e17587c6eaa5bedddaaa4dad3af210f5cf166e30cec09cac58baf8
   languageName: node
   linkType: hard
 
@@ -14309,7 +14309,7 @@ __metadata:
     lucide-react: "npm:^0.514.0"
     next: "npm:^15.3.2"
     next-themes: "npm:^0.4.6"
-    postcss: "npm:^8.5.4"
+    postcss: "npm:^8.5.5"
     prettier: "npm:^3.5.3"
     prettier-plugin-tailwindcss: "npm:^0.6.11"
     prisma: "npm:^6.5.0"