chore: update meetup URLs and add new entries [Fixes #14449]

[itzVarsha]

Description

• Replaced outdated URLs for multiple meetups with updated links.
• Specified city names for various meetups.
• Removed meetups with unavailable URLs.
• Added new meetup entries with their respective links.

Related Issue

Fixes #14449

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[wackerow]

Looks good! Thanks a lot @itzVarsha

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[wackerow]

@all-contributors please add @itzVarsha for maintenance

[allcontributors]

@wackerow

I've put up a pull request to add @itzVarsha! 🎉