build(deps): bump postcss from 8.4.23 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.23 to 8.4.31.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.23...8.4.31)

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

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -9492,13 +9492,13 @@ __metadata:
   linkType: hard
 
 "postcss@npm:^8.4.19":
-  version: 8.4.23
-  resolution: "postcss@npm:8.4.23"
+  version: 8.4.31
+  resolution: "postcss@npm:8.4.31"
   dependencies:
     nanoid: "npm:^3.3.6"
     picocolors: "npm:^1.0.0"
     source-map-js: "npm:^1.0.2"
-  checksum: fc6dc002e9a34c082f918a74c71bae89f8af48c66e60fcf94451ada935eee5e1ba6802731377abb98299d954636e5f01bf0be8de542acbcab694145fbf89665e
+  checksum: b7faa313d6bf58ed13b7126edbac63f668b064b52cb01f2c83d682e496bf294b563e4dabe9edf2b9fcd7d7d4f799eb4bf2fe3190a56b23be4cfed71ee2f1f864
   languageName: node
   linkType: hard