gitlint: accept "'" in committer names

Allow "'" in names, for example xxx O'xxx.

Fixes #10152

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

scripts/gitlint/zephyr_commit_rules.py

@@ -66,7 +66,7 @@ class SignedOffBy(CommitRule):
         flags |= re.IGNORECASE
         for line in commit.message.body:
             if line.lower().startswith("signed-off-by"):
-                if not re.search('(^)Signed-off-by: ([-\w.]+) ([-\w.]+) (.*)', line, flags=flags):
+                if not re.search('(^)Signed-off-by: ([-\'\w.]+) ([-\'\w.]+) (.*)', line, flags=flags):
                     return [RuleViolation(self.id, "Signed-off-by: must have a full name", line_nr=1)]
                 else:
                     return