Unwanted behavior - Git Identity

[sandinocoelho]

Describe the bug
When calling sfpowerscripts:orchestrator:publish without set any of the environment variables SFPOWERSCRIPTS_GIT_USERNAME and SFPOWERSCRIPTS_GIT_EMAIL, causes to override the global/local git config on my local project.

To Reproduce
Steps to reproduce the behavior:
Simply call the sfpowerscripts:orchestrator:publish method or other that calls the GitIdentity() method.

Expected behavior
When the global or local Git Config was set, I thing that call the method GitIdentity is useless.

Screenshots

Platform Details (please complete the following information):

• OS: macOS
• Version [e.g. CLI Version eg: 1.6.6]: 13.3.1 22E261 arm64
• Salesforce CLI(sfdx cli) Version: sfdx-cli/7.197.8 darwin-x64 node-v14.19.2
• CI Platform: N/A

Additional context
Maybe validate if the global/local user configs exist and bypass the setUsernameAndEmail in this case.

[azlam-abdulsalam]

Thanks @sandinocoelho , will address this in a future release