chore: bump concurrently from 5.2.0 to 5.3.0

Bumps [concurrently](https://github.com/kimmobrunfeldt/concurrently) from 5.2.0 to 5.3.0.
- [Release notes](https://github.com/kimmobrunfeldt/concurrently/releases)
- [Commits](kimmobrunfeldt/concurrently@v5.2.0...v5.3.0)

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

package.json

@@ -47,7 +47,7 @@
     "babel-loader": "8.1.0",
     "babel-polyfill": "6.26.0",
     "classnames": "2.2.6",
-    "concurrently": "5.2.0",
+    "concurrently": "5.3.0",
     "config": "3.3.1",
     "conventional-changelog-cli": "2.0.34",
     "coveralls": "3.1.0",