Bump concurrently from 5.3.0 to 6.0.0

Bumps [concurrently](https://github.com/kimmobrunfeldt/concurrently) from 5.3.0 to 6.0.0.
- [Release notes](https://github.com/kimmobrunfeldt/concurrently/releases)
- [Commits](kimmobrunfeldt/concurrently@v5.3.0...v6.0.0)

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

package.json

@@ -27,7 +27,7 @@
     "@types/js-base64": "^3.0.0",
     "@types/lodash": "^4.14.157",
     "@types/node": "^14.14.31",
-    "concurrently": "^5.3.0",
+    "concurrently": "^6.0.0",
     "coveralls": "^3.1.0",
     "jest": "^25.5.4",
     "nodemon": "^2.0.7",