Don't use deprecated methods from pystac

[gadomski]

Description: ~Disallow warnings in tests, which encourages (nay, forces) us to stop using deprecated items.~ There are some warnings from stac-check that I'm having trouble filtering out, so for now I'm dropping the "upgrade to error" bit and just fixing the deprecated pystac function usages.

PR checklist:

• [x] Code is formatted (run scripts/format).
• [x] Code lints properly (run scripts/lint).
• [x] Tests pass (run scripts/test).
• [ ] Documentation has been updated to reflect changes, if applicable.
• [x] Changes are added to the CHANGELOG.

[gadomski]

Cool, I'll try the glob. I was trying to do it with exact name and failing.

[gadomski]

Tight, that worked! I tested by cherry picking 6b17e0575f165d1bd4c6a56b70482b03b8c4b4bd onto main. Thanks @jsignell!