Update dependency postcss to v8.4.17 (#13562)

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

package.json

@@ -75,7 +75,7 @@
     "n-readlines": "1.0.1",
     "outdent": "0.8.0",
     "please-upgrade-node": "3.2.0",
-    "postcss": "8.4.16",
+    "postcss": "8.4.17",
     "postcss-less": "6.0.0",
     "postcss-media-query-parser": "0.2.3",
     "postcss-scss": "4.0.5",

yarn.lock

@@ -6569,14 +6569,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"postcss@npm:8.4.16":
-  version: 8.4.16
-  resolution: "postcss@npm:8.4.16"
+"postcss@npm:8.4.17":
+  version: 8.4.17
+  resolution: "postcss@npm:8.4.17"
   dependencies:
     nanoid: ^3.3.4
     picocolors: ^1.0.0
     source-map-js: ^1.0.2
-  checksum: 10eee25efd77868036403858577da0cefaf2e0905feeaba5770d5438ccdddba3d01cba8063e96b8aac4c6daa0ed413dd5ae0554a433a3c4db38df1d134cffc1f
+  checksum: a6d9096dd711e17f7b1d18ff5dcb4fdedf3941d5a3dc8b0e4ea873b8f31972d57f73d6da9a8aed7ff389eb52190ed34f6a94f299a7f5ddc68b08a24a48f77eb9
   languageName: node
   linkType: hard
 
@@ -6692,7 +6692,7 @@ __metadata:
     outdent: 0.8.0
     path-browserify: 1.0.1
     please-upgrade-node: 3.2.0
-    postcss: 8.4.16
+    postcss: 8.4.17
     postcss-less: 6.0.0
     postcss-media-query-parser: 0.2.3
     postcss-scss: 4.0.5