chore(deps): bump the npm_and_yarn group across 2 directories with 1 update

Bumps the npm_and_yarn group with 1 update in the /advent-of-calm/website directory: [postcss](https://github.com/postcss/postcss).
Bumps the npm_and_yarn group with 1 update in the /calm-suite/calm-guard/docs directory: [postcss](https://github.com/postcss/postcss).


Updates `postcss` from 8.5.8 to 8.5.12
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.8...8.5.12)

Updates `postcss` from 8.5.6 to 8.5.12
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.5.8...8.5.12)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.12
  dependency-type: indirect
  dependency-group: npm_and_yarn
- dependency-name: postcss
  dependency-version: 8.5.12
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

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

Author: dependabot[bot]

advent-of-calm/website/package-lock.json

@@ -60,7 +60,7 @@
         "eslint-plugin-react-refresh": "^0.5.0",
         "jsdom": "^26.0.0",
         "npm-force-resolutions": "^0.0.10",
-        "postcss": "^8.4.49",
+        "postcss": "^8.5.12",
         "prettier": "^3.3.3",
         "stylelint": "^16.26.0",
         "stylelint-config-standard": "^39.0.1",
@@ -74,7 +74,7 @@
         "css-what": "7.0.0",
         "express": "5.2.1",
         "nth-check": "2.1.1",
-        "postcss": "8.5.10",
+        "postcss": "8.5.12",
         "rollup": "4.60.1"
     },
     "overrides": {