Exclude merge commits from checks #75

Code of Conduct

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Is there an existing issue for this?

• I have searched the existing issues

Are you willing to sponsor your idea?

• Yes, I like to sponsor this request

Is your feature request related to a problem? Please describe

We are trying to automate, checking whether commits match a regex - your action works great.

Unless it's a merge commit (e.g. locally a developer merged one branch into another, created a merge commit and pushed that).

The commit message will not match the desired regex.

Describe the solution you'd like

You can check if a commit is a merge commit:

git cat-file -p $commit_id

If there's more than one `parent' line in the output, you found a merge.

If there's a "ignoreMergeCommits" setting acitvated, then do not even test for the regex (just list it as 'ignored'?)

Describe alternatives you've considered

No response

Additional context

No response