Update dependency postcss to v8.4.38 (#29684)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

yarn.lock

@@ -13858,13 +13858,13 @@ __metadata:
   linkType: hard
 "postcss@npm:^8.2.15, postcss@npm:^8.4.24, postcss@npm:^8.4.33":
-  version: 8.4.37
-  resolution: "postcss@npm:8.4.37"
+  version: 8.4.38
+  resolution: "postcss@npm:8.4.38"
   dependencies:
     nanoid: "npm:^3.3.7"
     picocolors: "npm:^1.0.0"
     source-map-js: "npm:^1.2.0"
-  checksum: 10c0/0b5730ad0ccbceaf0faaa4a283a144adefd23254f17dbdd63be5e0b37193c7df58003f88742c04c3ae6fd60d1a5158b331a4ce926797fb21e94833ae83c6bf69
+  checksum: 10c0/955407b8f70cf0c14acf35dab3615899a2a60a26718a63c848cf3c29f2467b0533991b985a2b994430d890bd7ec2b1963e36352b0774a19143b5f591540f7c06
   languageName: node
   linkType: hard