chore(deps-dev): bump postcss from 8.2.12 to 8.2.13

Bumps [postcss](https://github.com/postcss/postcss) from 8.2.12 to 8.2.13.
- [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/8.2.12...8.2.13)

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

package-lock.json

@@ -24884,9 +24884,9 @@
       "dev": true
     },
     "postcss": {
-      "version": "8.2.12",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.12.tgz",
-      "integrity": "sha512-BJnGT5+0q2tzvs6oQfnY2NpEJ7rIXNfBnZtQOKCIsweeWXBXeDd5k31UgTdS3d/c02ouspufn37mTaHWkJyzMQ==",
+      "version": "8.2.13",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.13.tgz",
+      "integrity": "sha512-FCE5xLH+hjbzRdpbRb1IMCvPv9yZx2QnDarBEYSN0N0HYk+TcXsEhwdFcFb+SRWOKzKGErhIEbBK2ogyLdTtfQ==",
       "dev": true,
       "requires": {
         "colorette": "^1.2.2",

package.json

@@ -156,7 +156,7 @@
     "npm-run-all": "^4.1.5",
     "oauth2-server": "^2.4.1",
     "open": "^8.0.6",
-    "postcss": "=8.2.12",
+    "postcss": "=8.2.13",
     "postcss-loader": "=4.2.0",
     "postcss-preset-env": "=6.7.0",
     "prettier": "^2.0.0",