Bump cssnano from 4.1.10 to 4.1.11 (#16020)

Bumps [cssnano](https://github.com/cssnano/cssnano) from 4.1.10 to 4.1.11.
- [Release notes](https://github.com/cssnano/cssnano/releases)
- [Commits](https://github.com/cssnano/cssnano/compare/v4.1.10...v4.1.11)

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package.json

@@ -86,7 +86,7 @@
     "compression-webpack-plugin": "^6.1.1",
     "cross-env": "^7.0.3",
     "css-loader": "^5.2.0",
-    "cssnano": "^4.1.10",
+    "cssnano": "^4.1.11",
     "detect-passive-events": "^2.0.3",
     "dotenv": "^8.2.0",
     "emoji-mart": "Gargron/emoji-mart#build",