Update dependency postcss to ^8.1.2

Author: renovate-bot

package.json

@@ -22,7 +22,7 @@
   "devDependencies": {
     "chai": "^4.2.0",
     "mocha": "^8.2.0",
-    "postcss": "^8.1.0",
+    "postcss": "^8.1.2",
     "tailwindcss": "^1.9.4"
   },
   "peerDependencies": {

yarn.lock

@@ -820,10 +820,10 @@ postcss@^6.0.9:
     source-map "^0.6.1"
     supports-color "^5.4.0"
 
-postcss@^8.1.0:
-  version "8.1.1"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.1.tgz#c3a287dd10e4f6c84cb3791052b96a5d859c9389"
-  integrity sha512-9DGLSsjooH3kSNjTZUOt2eIj2ZTW0VI2PZ/3My+8TC7KIbH2OKwUlISfDsf63EP4aiRUt3XkEWMWvyJHvJelEg==
+postcss@^8.1.2:
+  version "8.1.2"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.2.tgz#9731fcaa4f7b0bef47121821bdae9eeb609a324c"
+  integrity sha512-mToqEVFq8jF9TFhlIK4HhE34zknFJuNTgqtsr60vUvrWn+9TIYugCwiV1JZRxCuOrej2jjstun1bn4Bc7/1HkA==
   dependencies:
     colorette "^1.2.1"
     line-column "^1.0.2"