Fix for issue14426 - buildbots here I come

Fix for issue14426 - buildbots here I come · python/cpython@aeeba26

Original file line number	Diff line number	Diff line change
`@@ -439,7 +439,7 @@ def OutputString(self, attrs=None):`
`439`	`439`	`(?P<val> # Start of group 'val'`
`440`	`440`	`"(?:[^\\"]\|\\.)*" # Any doublequoted string`
`441`	`441`	`\| # or`
`442`		`- \w{3},\s[\w\d-]{9,11}\s[\d:]{8}\sGMT # Special case for "expires" attr`
	`442`	`+ \w{3},\s[\w\d\s-]{9,11}\s[\d:]{8}\sGMT # Special case for "expires" attr`
`443`	`443`	`\| # or`
`444`	`444`	`""" + _LegalCharsPatt + r"""* # Any word or empty string`
`445`	`445`	`) # End of group 'val'`