Bump postcss from 8.3.8 to 8.4.31

Bumps [postcss](https://github.com/postcss/postcss) from 8.3.8 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@8.3.8...8.4.31)

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

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

package.json

@@ -36,7 +36,7 @@
     "clean-css-cli": "^5.3.3",
     "jquery": ">=3.5.0",
     "npm-run-all": "^4.1.5",
-    "postcss": "^8.0.0",
+    "postcss": "^8.4.31",
     "postcss-cli": "^8.0.0",
     "sanitize-filename": "^1.6.3",
     "sass": "^1.42.1",

yarn.lock

@@ -610,13 +610,13 @@ minimatch@^3.0.4:
   dependencies:
     brace-expansion "^1.1.7"
 
-nanocolors@^0.2.2, nanocolors@^0.2.6:
+nanocolors@^0.2.6:
   version "0.2.10"
   resolved "https://registry.npmjs.org/nanocolors/-/nanocolors-0.2.10.tgz"
 
-nanoid@^3.1.25:
-  version "3.2.0"
-  resolved "https://registry.npmjs.org/nanoid/-/nanoid-3.2.0.tgz"
+nanoid@^3.3.6:
+  version "3.3.6"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.6.tgz#443380c856d6e9f9824267d960b4236ad583ea4c"
 
 nice-try@^1.0.4:
   version "1.0.5"
@@ -769,13 +769,13 @@ postcss-value-parser@^4.2.0:
   version "4.2.0"
   resolved "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz"
 
-postcss@^8.0.0:
-  version "8.3.8"
-  resolved "https://registry.npmjs.org/postcss/-/postcss-8.3.8.tgz"
+postcss@^8.4.31:
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
   dependencies:
-    nanocolors "^0.2.2"
-    nanoid "^3.1.25"
-    source-map-js "^0.6.2"
+    nanoid "^3.3.6"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
 
 pretty-hrtime@^1.0.3:
   version "1.0.3"
@@ -872,9 +872,9 @@ slash@^3.0.0:
   version "3.0.0"
   resolved "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz"
 
-source-map-js@^0.6.2:
-  version "0.6.2"
-  resolved "https://registry.npmjs.org/source-map-js/-/source-map-js-0.6.2.tgz"
+source-map-js@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
 
 source-map@~0.6.0:
   version "0.6.1"