chore(devdeps): update dependency postcss to v8.4.4 (#964)

Co-authored-by: Renovate Bot <[email protected]>

package.json

@@ -153,7 +153,7 @@
     "jest-axe": "5.0.1",
     "jest-junit": "13.0.0",
     "lint-staged": "12.1.2",
-    "postcss": "8.3.11",
+    "postcss": "8.4.4",
     "prettier": "2.5.0",
     "react": "17.0.2",
     "react-dom": "17.0.2",

yarn.lock

@@ -3403,7 +3403,7 @@ __metadata:
     jest-junit: 13.0.0
     lint-staged: 12.1.2
     polished: 4.1.3
-    postcss: 8.3.11
+    postcss: 8.4.4
     prettier: 2.5.0
     prop-types: 15.7.2
     react: 17.0.2
@@ -17755,14 +17755,14 @@ fsevents@^1.2.7:
   languageName: node
   linkType: hard
 
-"postcss@npm:8.3.11, postcss@npm:^8.2.15":
-  version: 8.3.11
-  resolution: "postcss@npm:8.3.11"
+"postcss@npm:8.4.4, postcss@npm:^8.2.15":
+  version: 8.4.4
+  resolution: "postcss@npm:8.4.4"
   dependencies:
     nanoid: ^3.1.30
     picocolors: ^1.0.0
-    source-map-js: ^0.6.2
-  checksum: 1a230553d74c66aa9585c90781ed8ea75f19cefea405d2117b67fbeb24b5b5e0e17be2e0c5a07db31dd085643a13394127ab2222e940771b70498331bf20f35e
+    source-map-js: ^1.0.1
+  checksum: 6cf3fe0ecdf5a0d2aeb5e8404938c7eab968704e2e29dc5421e90b4014eb1975c1c0ad828425f2428807ef6e3fcfadd71f988ab55cb06c28ac2866f22403255b
   languageName: node
   linkType: hard
 
@@ -20129,10 +20129,10 @@ resolve@^2.0.0-next.3:
   languageName: node
   linkType: hard
 
-"source-map-js@npm:^0.6.2":
-  version: 0.6.2
-  resolution: "source-map-js@npm:0.6.2"
-  checksum: 9c8151a29e00fd8d3ba87709fdf9a9ce48313d653f4a29a39b4ae53d346ac79e005de624796ff42eff55cbaf26d2e87f4466001ca87831d400d818c5cf146a0e
+"source-map-js@npm:^1.0.1":
+  version: 1.0.1
+  resolution: "source-map-js@npm:1.0.1"
+  checksum: 22606113d62bbd468712b0cb0c46e9a8629de7eb081049c62a04d977a211abafd7d61455617f8b78daba0b6c0c7e7c88f8c6b5aaeacffac0a6676ecf5caac5ce
   languageName: node
   linkType: hard