parse_datetime fails to parse RFC 5322 ("Internet Message Format", ye olde email) dates #158
Description
Example: "Thu, 11 Jan 2024 21:17:19 +0100"
This format is produced (date --rfc-email) and understood (date --date=...) by GNU date.
See https://datatracker.ietf.org/doc/html/rfc5322#section-3.3 for the spec.