Improve regex (RDT-835)

[tomassebestik]

@kumekay :
I would not duplicate existing regex, but would use ignore case flag:

re.IGNORECASE

• https://docs.python.org/3/library/re.html#re.I
• https://github.com/espressif/conventional-precommit-linter/pull/26/files#diff-45fad491a8be636292d6f98e7fdd59f16fb717070dbe4e670650c8bda27981f9R105

    regex_scope = r'^[a-z0-9_/.,*-]*$'
    if commit_scope and not re.match(regex_scope, commit_scope, re.I if args.scope_case_insensitive else 0):
        ...

But it's just a note for the future improvement