replace RequestsFetcher for Urllib3Fetcher#2762

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NicholasTanz wants to merge 11 commits intotheupdateframework:developfrom NicholasTanz:switchUrlLib3

+139-19

Commits on Jan 29, 2025

Merge branch 'theupdateframework:develop' into switchUrlLib3
NicholasTanz
authored

Commits on Jan 31, 2025

clarify urllib3 as requirement in pyproject.toml and add back in requestsFetcher as option.
NicholasTanz
committed

Commits on Feb 5, 2025

remove self.app_user_agent attribute, as it's not used outside of init
NicholasTanz
committed