Bump classnames from 2.2.6 to 2.3.1

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

yarn.lock

@@ -2360,9 +2360,9 @@ class-utils@^0.3.5:
     static-extend "^0.1.1"
 
 classnames@^2.2.4:
-  version "2.2.6"
-  resolved "https://registry.yarnpkg.com/classnames/-/classnames-2.2.6.tgz#43935bffdd291f326dad0a205309b38d00f650ce"
-  integrity sha512-JR/iSQOSt+LQIWwrwEzJ9uk0xfN3mTVYMwt1Ir5mUcSN6pU+V4zQFFaJsclJbPuAUQH+yfWef6tm7l1quW3C8Q==
+  version "2.3.1"
+  resolved "https://registry.yarnpkg.com/classnames/-/classnames-2.3.1.tgz#dfcfa3891e306ec1dad105d0e88f4417b8535e8e"
+  integrity sha512-OlQdbZ7gLfGarSqxesMesDa5uz7KFbID8Kpq/SxIoNGDqY8lSYs0D+hhtBXhcdB3rcbXArFr7vlHheLk1voeNA==
 
 clean-css@4.1.x:
   version "4.1.11"