Bump postcss from 8.5.16 to 8.5.18

Bumps [postcss](https://github.com/postcss/postcss) from 8.5.16 to 8.5.18.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.16...8.5.18)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.16
  dependency-type: indirect
...

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

Author: dependabot[bot]

apps/docs/package.json

@@ -30,7 +30,7 @@
         "@types/node": "^22.14.1",
         "@types/react": "^19.0.0",
         "@types/react-dom": "^19.0.0",
-        "postcss": "^8.5.3",
+        "postcss": "^8.5.18",
         "tailwindcss": "^4.1.4",
         "typescript": "^5.9.3"
     }

apps/web/package.json

@@ -41,7 +41,7 @@
         "@types/react-dom": "^19.0.0",
         "@tailwindcss/postcss": "^4.1.16",
         "jsdom": "^25.0.1",
-        "postcss": "^8.4.35",
+        "postcss": "^8.5.18",
         "tailwindcss": "^4.1.16",
         "typescript": "^5.9.3",
         "vitest": "^4.1.9"

packages/email-blocks/package.json

@@ -41,7 +41,7 @@
         "@types/react": "^19.0.0",
         "autoprefixer": "^10.4.18",
         "eslint": "^8.57.0",
-        "postcss": "^8.4.35",
+        "postcss": "^8.5.18",
         "rimraf": "^4.1.1",
         "tailwindcss": "^3.4.1",
         "tailwindcss-animate": "^1.0.7",

packages/email-editor/package.json

@@ -41,7 +41,7 @@
         "@types/react": "^19.2.0",
         "autoprefixer": "^10.4.18",
         "eslint": "^8.57.0",
-        "postcss": "^8.4.35",
+        "postcss": "^8.5.18",
         "rimraf": "^4.1.1",
         "tailwindcss": "^3.4.1",
         "tailwindcss-animate": "^1.0.7",