Update dependency classnames to v2.4.0

Author: renovate[bot]

package-lock.json

@@ -2972,10 +2972,10 @@ class-utils@^0.3.5:
     isobject "^3.0.0"
     static-extend "^0.1.1"
 
-classnames@^2.2.6:
-  version "2.3.1"
-  resolved "https://registry.yarnpkg.com/classnames/-/classnames-2.3.1.tgz#dfcfa3891e306ec1dad105d0e88f4417b8535e8e"
-  integrity sha512-OlQdbZ7gLfGarSqxesMesDa5uz7KFbID8Kpq/SxIoNGDqY8lSYs0D+hhtBXhcdB3rcbXArFr7vlHheLk1voeNA==
+classnames@^2.2.6, classnames@^2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/classnames/-/classnames-2.4.0.tgz#78011af2612f5c552195e2e657bd5fe2de973cac"
+  integrity sha512-lWxiIlphgAhTLN657pwU/ofFxsUTOWc2CRIFeoV5st0MGRJHStUnWIUJgDHxjUO/F0mXzGufXIM4Lfu/8h+MpA==
 
 clean-css@^4.2.3:
   version "4.2.3"