feat: Remove urllib3 pin

[astuyve]

What does this PR do?

Fixes #508

Motivation

Last year we pinned urllib3 < 2.x because of a regression which broke lambda functions all over the place. This is no longer necessary, and we should unpin it.

Testing Guidelines

Additional Notes

Types of Changes

• [ ] Bug fix
• [ ] New feature
• [ ] Breaking change
• [ ] Misc (docs, refactoring, dependency upgrade, etc.)

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• [ ] This PR contains breaking changes that are documented in the description
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