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

stcal/tox.ini

Line 65 in 5fbabf6

devdeps: tweakreg>=0.0.dev0

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]

Codecov Report

All modified and coverable lines are covered by tests ✅

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

Additional details and impacted files

@@            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     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[emolter]

yep, sorry about that