Bump postcss from 8.4.39 to 8.4.40

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.39 to 8.4.40.
- [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/8.4.39...8.4.40)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...
Signed-off-by: dependabot[bot] <support@github.com>

yarn.lock

@@ -11788,13 +11788,13 @@ __metadata:
   linkType: hard
 
 "postcss@npm:^8.0.3, postcss@npm:^8.4.23":
-  version: 8.4.39
-  resolution: "postcss@npm:8.4.39"
+  version: 8.4.40
+  resolution: "postcss@npm:8.4.40"
   dependencies:
     nanoid: ^3.3.7
     picocolors: ^1.0.1
     source-map-js: ^1.2.0
-  checksum: 14b130c90f165961772bdaf99c67f907f3d16494adf0868e57ef68baa67e0d1f6762db9d41ab0f4d09bab6fb7888588dba3596afd1a235fd5c2d43fba7006ac6
+  checksum: afd0cc49d2169dcd96c0f17e155c5d75de048956306a3017f1cfa6a7d66b941592245bed20f7796ceeccb2d8967749b623be2c7b010a74f67ea10fb5bdb8ba28
   languageName: node
   linkType: hard