chore(deps-dev): bump postcss from 8.4.21 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.21 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@8.4.21...8.4.31)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
...

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

yarn.lock

@@ -21920,7 +21920,7 @@ fsevents@^1.2.7:
   languageName: node
   linkType: hard
 
-"nanoid@npm:^3.3.1, nanoid@npm:^3.3.4":
+"nanoid@npm:^3.3.1":
   version: 3.3.4
   resolution: "nanoid@npm:3.3.4"
   bin:
@@ -24149,25 +24149,14 @@ fsevents@^1.2.7:
   languageName: node
   linkType: hard
 
-"postcss@npm:^8.2.14":
-  version: 8.4.27
-  resolution: "postcss@npm:8.4.27"
+"postcss@npm:^8.2.14, postcss@npm:^8.2.15, postcss@npm:^8.4.19, postcss@npm:^8.4.21, postcss@npm:~8.4.21":
+  version: 8.4.31
+  resolution: "postcss@npm:8.4.31"
   dependencies:
     nanoid: ^3.3.6
     picocolors: ^1.0.0
     source-map-js: ^1.0.2
-  checksum: 1cdd0c298849df6cd65f7e646a3ba36870a37b65f55fd59d1a165539c263e9b4872a402bf4ed1ca1bc31f58b68b2835545e33ea1a23b161a1f8aa6d5ded81e78
-  languageName: node
-  linkType: hard
-
-"postcss@npm:^8.2.15, postcss@npm:^8.4.19, postcss@npm:^8.4.21, postcss@npm:~8.4.21":
-  version: 8.4.21
-  resolution: "postcss@npm:8.4.21"
-  dependencies:
-    nanoid: ^3.3.4
-    picocolors: ^1.0.0
-    source-map-js: ^1.0.2
-  checksum: e39ac60ccd1542d4f9d93d894048aac0d686b3bb38e927d8386005718e6793dbbb46930f0a523fe382f1bbd843c6d980aaea791252bf5e176180e5a4336d9679
+  checksum: 1d8611341b073143ad90486fcdfeab49edd243377b1f51834dc4f6d028e82ce5190e4f11bb2633276864503654fb7cab28e67abdc0fbf9d1f88cad4a0ff0beea
   languageName: node
   linkType: hard