fix: upgrade postcss from 8.4.7 to 8.4.12 (#652)

Snyk has created this PR to upgrade postcss from 8.4.7 to 8.4.12.

See this package in npm:


See this project in Snyk:
https://app.snyk.io/org/artyom-ganev/project/af59166f-1d5e-4ddf-bfe9-e3ce3c67c0fd?utm_source=github&utm_medium=referral&page=upgrade-pr

package.json

@@ -82,7 +82,7 @@
  "passport": "^0.5.2",
  "passport-jwt": "^4.0.0",
  "passport-local": "^1.0.0",
- "postcss": "^8.4.7",
+ "postcss": "^8.4.12",
  "prettier": "^2.5.1",
  "prop-types": "^15.8.1",
  "react": "^17.0.2",

yarn.lock

@@ -5737,10 +5737,10 @@ postcss@8.4.5:
  picocolors "^1.0.0"
  source-map-js "^1.0.1"
 
-postcss@^8.4.7:
- version "8.4.7"
- resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.7.tgz#f99862069ec4541de386bf57f5660a6c7a0875a8"
- integrity sha512-L9Ye3r6hkkCeOETQX6iOaWZgjp3LL6Lpqm6EtgbKrgqGGteRMNb9vzBfRL96YOSu8o7x3MfIH9Mo5cPJFGrW6A==
+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"