Please change from master to main branch

[Baplisca]

The main branch is now the default branch. So, I think it should be changed as follows

before(main.py Line.119) self.git.all(self.repo_name, remote_url, 'master', file_path, commit_message)

after self.git.all(self.repo_name, remote_url, 'main', file_path, commit_message)