BaseCookie.__parse_string() doesn't work with expires= between cookies

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2020-11-03.19:17:21.153>
labels = ['type-bug', '3.8', '3.9', '3.10', '3.7', 'library']
title = "BaseCookie.__parse_string() doesn't work with expires= between cookies"
updated_at = <Date 2021-04-16.18:32:59.002>
user = 'https://github.com/paulie4'

bugs.python.org fields:

activity = <Date 2021-04-16.18:32:59.002>
actor = 'paulie4'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Library (Lib)']
creation = <Date 2020-11-03.19:17:21.153>
creator = 'paulie4'
dependencies = []
files = []
hgrepos = []
issue_num = 42256
keywords = []
message_count = 3.0
messages = ['380294', '380297', '391247']
nosy_count = 1.0
nosy_names = ['paulie4']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue42256'
versions = ['Python 3.6', 'Python 3.7', 'Python 3.8', 'Python 3.9', 'Python 3.10']