Update initial branch name in commit specs
What does this MR do?
This updates the default branch name in spec/frontend/project/commit/ specs from master to main.
This MR is part of a bigger effort to Update default initial branch name in Frontend code.
Screenshots (strongly suggested)
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After:
Does this MR meet the acceptance criteria?
Conformity
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📋 Does this MR need a changelog?-
I have not included a changelog entry because this is a developer-facing change.
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Code review guidelines -
Merge request performance guidelines
Availability and Testing
Related to #324100