Update dependency postcss to v8.4.19

Author: renovate[bot]

package.json

@@ -14,7 +14,7 @@
     "@types/react-dom": "18.0.8",
     "autoprefixer": "10.4.13",
     "parcel": "2.8.0",
-    "postcss": "8.4.18",
+    "postcss": "8.4.19",
     "process": "0.11.10",
     "typescript": "4.8.4"
   },

yarn.lock

@@ -1606,7 +1606,16 @@ postcss-value-parser@^4.0.0, postcss-value-parser@^4.2.0:
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@8.4.18, postcss@^8.4.18:
+postcss@8.4.19:
+  version "8.4.19"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.19.tgz#61178e2add236b17351897c8bcc0b4c8ecab56fc"
+  integrity sha512-h+pbPsyhlYj6N2ozBmHhHrs9DzGmbaarbLvWipMRO7RLS+v4onj26MPFXA5OBYFxyqYhUJK456SwDcY9H2/zsA==
+  dependencies:
+    nanoid "^3.3.4"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
+
+postcss@^8.4.18:
   version "8.4.18"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.18.tgz#6d50046ea7d3d66a85e0e782074e7203bc7fbca2"
   integrity sha512-Wi8mWhncLJm11GATDaQKobXSNEYGUHeQLiQqDFG1qQ5UTDPTEvKw0Xt5NsTpktGTwLps3ByrWsBrG0rB8YQ9oA==