Bump postcss from 8.2.8 to 8.2.9

Bumps [postcss](https://github.com/postcss/postcss) from 8.2.8 to 8.2.9.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.2.8...8.2.9)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package-lock.json

@@ -4579,13 +4579,13 @@
       "dev": true
     },
     "postcss": {
-      "version": "8.2.8",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.8.tgz",
-      "integrity": "sha512-1F0Xb2T21xET7oQV9eKuctbM9S7BC0fetoHCc4H13z0PT6haiRLP4T0ZY4XWh7iLP0usgqykT6p9B2RtOf4FPw==",
+      "version": "8.2.9",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.9.tgz",
+      "integrity": "sha512-b+TmuIL4jGtCHtoLi+G/PisuIl9avxs8IZMSmlABRwNz5RLUUACrC+ws81dcomz1nRezm5YPdXiMEzBEKgYn+Q==",
       "dev": true,
       "requires": {
         "colorette": "^1.2.2",
-        "nanoid": "^3.1.20",
+        "nanoid": "^3.1.22",
         "source-map": "^0.6.1"
       },
       "dependencies": {

package.json

@@ -25,7 +25,7 @@
   "devDependencies": {
     "autoprefixer": "^10.2.5",
     "eslint-plugin-compat": "^3.9.0",
-    "postcss": "^8.2.8",
+    "postcss": "^8.2.9",
     "postcss-cli": "^8.3.1",
     "prettier": "2.2.1",
     "xo": "^0.37.1"