build: bump commander from 2.15.0 to 2.15.1

Bumps [commander](https://github.com/tj/commander.js) from 2.15.0 to 2.15.1.
- [Release notes](https://github.com/tj/commander.js/releases)
- [Changelog](https://github.com/tj/commander.js/blob/master/CHANGELOG.md)
- [Commits](tj/commander.js@v2.15.0...v2.15.1)

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

yarn.lock

@@ -131,8 +131,8 @@ colors@1.0.3:
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.0.3.tgz#0433f44d809680fdeb60ed260f1b0c262e82a40b"
 
 commander@^2.11.0, commander@^2.14.1, commander@^2.9.0:
-  version "2.15.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.0.tgz#ad2a23a1c3b036e392469b8012cec6b33b4c1322"
+  version "2.15.1"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.15.1.tgz#df46e867d0fc2aec66a34662b406a9ccafff5b0f"
 
 concat-map@0.0.1:
   version "0.0.1"