Ryosuke Kamesawa

Support submodule cloning option

2

Currently, there is no way to set `gitSumobuleConfigOverride` in this action. https://docs.aws.amazon.com/codebuild/latest/APIReference/API_StartBuild.html#CodeBuild-StartBuild-request-gitSubmodulesConfigOverride This would be helpful when the repository is private.

I believe that the tracing-subscriber's default features are unnecessary. This PR removes all default features except for 'std'.