chore: Exclude git folder from linting

[itaybre]

Found swifltint linting git files because I used Package.swift in a branch name

Linting '.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift' (153/154)
Linting '.git/logs/refs/remotes/origin/itaybre/add_new_slice_to_pacakge.swift' (154/154)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift:3:174: error: Identifier Name Violation: Variable name 'Sentry' should start with a lowercase character (identifier_name)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift:6:173: error: Identifier Name Violation: Variable name 'Sentry' should start with a lowercase character (identifier_name)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift:1:1: error: Number Separator Violation: Underscores should be used as thousand separators (number_separator)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift:1:42: error: Number Separator Violation: Underscores should be used as thousand separators (number_separator)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift:3:180: error: Opening Brace Spacing Violation: Opening braces should be preceded by a single space and on the same line as the declaration (opening_brace)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/heads/itaybre/add_new_slice_to_pacakge.swift:6:215: error: Opening Brace Spacing Violation: Opening braces should be preceded by a single space and on the same line as the declaration (opening_brace)
/Users/itaybrenner/sentry/sentry-cocoa/.git/logs/refs/remotes/origin/itaybre/add_new_slice_to_pacakge.swift:1:1: error: Number Separator Violation: Underscores should be used as thousand separators (number_separator)

#skip-changelog

[philprime]

Thanks, I had this committed in some PR too, didn't get a chance yet to create a separate PR.