Merge pull request #97 from masx200/dependabot/npm_and_yarn/postcss-8.4.20

Bump postcss from 8.4.16 to 8.4.20

Author: masx200

package.json

@@ -83,7 +83,7 @@
         "optimize-css-assets-webpack-plugin": "^6.0.1",
         "os-browserify": "^0.3.0",
         "pnp-webpack-plugin": "^1.6.4",
-        "postcss": "8.4.16",
+        "postcss": "8.4.20",
         "postcss-flexbugs-fixes": "^5.0.2",
         "postcss-loader": "^7.0.1",
         "postcss-normalize": "^10.0.0",