fix devdeps

[braingram]

The devdeps tests are failing due to a failure to find a tweakreg dependency: https://github.com/spacetelescope/stcal/actions/runs/10099805963/job/27929757174

https://github.com/spacetelescope/stcal/blob/5fbabf672bc4f9a5c1eb522bc7b8896a6a5dfcc8/tox.ini#L65

This PR fixes the typo to use tweakwcs and installs it from git (as I don't believe pre-releases are common for tweakwcs).

Checklist

• [ ] added entry in CHANGES.rst (either in Bug Fixes or Changes to API)
• [ ] updated relevant tests
• [ ] updated relevant documentation
• [ ] updated relevant milestone(s)
• [ ] added relevant label(s)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.01%. Comparing base (5772579) to head (58018d4). Report is 196 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #274 +/- ## ========================================== + Coverage 83.79% 84.01% +0.22% ========================================== Files 35 39 +4 Lines 6998 7345 +347 ========================================== + Hits 5864 6171 +307 - Misses 1134 1174 +40 ```

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