gh-82039: relax cookiejar.py case-sensitive regex for the inconsequential first line of the cookie file

[ashleyharvey]

https://bugs.python.org/issue37858

• Issue: CookieLib: MozillaCookieJar.py uses case-sensitive regex to validate cookies file #82039

[the-knights-who-say-ni]

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[ashleyharvey]

Apologies if I'm being obtuse, but, my PR has been in the queue for 3.5 years. Is there anything I need to do to get this approved and merged in?

[arhadthedev]

@ashleyharvey Could you sign the new CLA by clicking not signed button in the cpython-cla-bot's message, please?

[ashleyharvey]

@ashleyharvey Could you sign the new CLA by clicking not signed button in the cpython-cla-bot's message, please?

Done, I think? I got an internal server error multiple times but looking at the bot's comment above now, it says it's signed.

[ashleyharvey]

Bump