gitlint: exclude long line with co-authored-by

Treat co-authored-by like signed-off-by.

(cherry picked from commit 9e87bd7)

Original-Signed-off-by: Anas Nashif <anas.nashif@intel.com>
GitOrigin-RevId: 9e87bd7
Change-Id: Ifeca9f669519602aadda5f5ce82500c4b47f83bd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/4896614
Tested-by: Al Semjonovs <asemjonovs@google.com>
Commit-Queue: Al Semjonovs <asemjonovs@google.com>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Reviewed-by: Al Semjonovs <asemjonovs@google.com>

scripts/gitlint/zephyr_commit_rules.py

@@ -109,7 +109,7 @@ class MaxLineLengthExceptions(LineRule):
     def validate(self, line, _commit):
         max_length = self.options['line-length'].value
         urls = re.findall(r'http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+', line)
-        if line.startswith('Signed-off-by'):
+        if line.lower().startswith('signed-off-by') or line.lower().startswith('co-authored-by'):
             return
 
         if urls: