Update dependencies, eliminating warnings

[kroenlein]

Citrine Python PR

Description

• requests < 2.32.2 are yanked do to CVE-2024-35195
• datetimes without explicit time zones are deprecated
• pytz is unnecessary for Python >= 3.9, so it's now a conditional dependency
• pint version is controlled by gemd-python now

PR Type:

• Breaking change (fix or feature that would cause existing functionality to change)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Maintenance (non-breaking change to assist developers)

Adherence to team decisions

• I have added tests for 100% coverage
• I have written Numpy-style docstrings for every method and class.
• I have communicated the downstream consequences of the PR to others.
• I have bumped the version in __version__.py

[StevenKauwe]

changes look good. lgtm