Update dependency postcss to ^8.4.12

Author: renovate-bot

apps/web/package.json

@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "autoprefixer": "^10.4.2",
-    "postcss": "^8.4.5",
+    "postcss": "^8.4.12",
     "tailwindcss": "^3.0.15"
   }
 }

yarn.lock

@@ -5168,7 +5168,16 @@ [email protected]:
     picocolors "^1.0.0"
     source-map-js "^1.0.1"
 
-postcss@^8.4.5, postcss@^8.4.6:
+postcss@^8.4.12:
+  version "8.4.12"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.12.tgz#1e7de78733b28970fa4743f7da6f3763648b1905"
+  integrity sha512-lg6eITwYe9v6Hr5CncVbK70SoioNQIq81nsaG86ev5hAidQvmOeETBqs7jm43K2F5/Ley3ytDtriImV6TpNiSg==
+  dependencies:
+    nanoid "^3.3.1"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
+
+postcss@^8.4.6:
   version "8.4.7"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.7.tgz#f99862069ec4541de386bf57f5660a6c7a0875a8"
   integrity sha512-L9Ye3r6hkkCeOETQX6iOaWZgjp3LL6Lpqm6EtgbKrgqGGteRMNb9vzBfRL96YOSu8o7x3MfIH9Mo5cPJFGrW6A==