Bump lolex from 2.3.2 to 2.4.0

Bumps [lolex](https://github.com/sinonjs/lolex) from 2.3.2 to 2.4.0.
- [Release notes](https://github.com/sinonjs/lolex/releases)
- [Changelog](https://github.com/sinonjs/lolex/blob/master/History.md)
- [Commits](sinonjs/fake-timers@v2.3.2...v2.4.0)

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

package.json

@@ -34,7 +34,7 @@
     "eslint-config-prettier": "^2.6.0",
     "eslint-plugin-import": "^2.7.0",
     "eslint-plugin-prettier": "^2.3.1",
-    "lolex": "^2.1.3",
+    "lolex": "^2.4.0",
     "mocha": "^5.0.2",
     "prettier": "^1.7.4"
   }

yarn.lock

@@ -890,9 +890,9 @@ lodash@^4.17.4, lodash@^4.3.0:
   version "4.17.5"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.5.tgz#99a92d65c0272debe8c96b6057bc8fbfa3bed511"
 
-lolex@^2.1.3:
-  version "2.3.2"
-  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.3.2.tgz#85f9450425103bf9e7a60668ea25dc43274ca807"
+lolex@^2.4.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-2.4.0.tgz#37c0fa58ee01b29ef97ce94a3e3d4cdbb131b099"
 
 long@^4.0.0:
   version "4.0.0"