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](postcss/postcss@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] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -89,7 +89,7 @@
     "lodash": "4.17.21",
     "moment": "2.30.1",
     "npm-run-all": "4.1.5",
-    "postcss": "8.5.4",
+    "postcss": "8.5.5",
     "postcss-import": "16.1.0",
     "postcss-nested": "7.0.2",
     "postcss-preset-env": "10.1.6",