2.2.0 release

[jhunkeler]

• Update change log for release
• Generate/push release branch
• Run tests against pre-tag commit
  • https://github.com/spacetelescope/stdatamodels/actions/runs/12436746583
  • https://github.com/spacetelescope/stdatamodels/actions/runs/12436746571
  • https://github.com/spacetelescope/RegressionTests/actions/runs/12437035911 (jwst)
• Generate/push release tag
• Create release object
• Publish release object
  • https://github.com/spacetelescope/stdatamodels/actions/runs/12438005652
  • https://pypi.org/project/stdatamodels/2.2.0/
• Update changelog for return to development
• Generate/push development tag

[braingram]

FYI no need to run romancal tests for this one. It doesn't have stdatamodels as a dependency.
Perhaps we could rename it to jwst_datamodels.

[jhunkeler]

Oops! Good catch, thanks!