Bump commander from 5.1.0 to 6.0.0

Bumps [commander](https://github.com/tj/commander.js) from 5.1.0 to 6.0.0.
- [Release notes](https://github.com/tj/commander.js/releases)
- [Changelog](https://github.com/tj/commander.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tj/commander.js/compare/v5.1.0...v6.0.0)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -27,7 +27,7 @@
     "classnames": "^2.2.4",
     "codecov": "^3.1.0",
     "coffeeify": "^2.1.0",
-    "commander": "^5.0.0",
+    "commander": "^6.0.0",
     "core-js": "^3.4.1",
     "cross-env": "^7.0.0",
     "custom-event": "^1.0.1",

yarn.lock

@@ -2341,10 +2341,10 @@ commander@^2.19.0, commander@^2.20.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
 
-commander@^5.0.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-5.1.0.tgz#46abbd1652f8e059bddaef99bbdcb2ad9cf179ae"
-  integrity sha512-P0CysNDQ7rtVw4QIQtm+MRxV66vKFSvlsQvGYXZWR3qFU0jlMKHZZZgw8e+8DSah4UDKMqnknRDQz+xuQXQ/Zg==
+commander@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-6.0.0.tgz#2b270da94f8fb9014455312f829a1129dbf8887e"
+  integrity sha512-s7EA+hDtTYNhuXkTlhqew4txMZVdszBmKWSPEMxGr8ru8JXR7bLUFIAtPhcSuFdJQ0ILMxnJi8GkQL0yvDy/YA==
 
 commander@~2.11.0:
   version "2.11.0"