Bump classnames from 2.2.6 to 2.3.1 (#16000)

Bumps [classnames](https://github.com/JedWatson/classnames) from 2.2.6 to 2.3.1.
- [Release notes](https://github.com/JedWatson/classnames/releases)
- [Changelog](https://github.com/JedWatson/classnames/blob/master/HISTORY.md)
- [Commits](https://github.com/JedWatson/classnames/commits)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -81,7 +81,7 @@
     "babel-plugin-transform-react-remove-prop-types": "^0.4.24",
     "babel-runtime": "^6.26.0",
     "blurhash": "^1.1.3",
-    "classnames": "^2.2.5",
+    "classnames": "^2.3.1",
     "color-blend": "^3.0.1",
     "compression-webpack-plugin": "^6.1.1",
     "cross-env": "^7.0.3",