.com.ua: Grab only first creation date for domain

Starting from the section with label "Registrar:" the information is
related to different contacts and not with the domain base information.

Currently the parser is returning two creation_date values because it's
grabbing values for registrant and admin contacts and since both have
the same date, they get conflated into only one. The domain itself
should only have one creation date.

whois/parser.py

@@ -2442,7 +2442,7 @@ class WhoisUA(WhoisEntry):
         "admin_phone": r"(?<=Administrative Contacts:)[\s\W\w]*?phone:(.*)",
         "admin_fax": r"(?<=Administrative Contacts:)[\s\W\w]*?fax:(.*)",
         "updated_date": r"modified: *(.+)",
-        "creation_date": r"created: (.+)",
+        "creation_date": r"created: (.+)[\s\W\w]*?(?=Registrar:)",
         "expiration_date": r"expires: (.+)",
         "name_servers": r"nserver: *(.+)",
         "emails": EMAIL_REGEX,  # list of email addresses