rcal-859 Update okify script to use GA directories on artifactory

[ddavis-stsci]

Resolves RCAL-859

Closes #1281

This PR updates the okify script to use the GA directories in artifactory.

Checklist

• [X] added entry in CHANGES.rst under the corresponding subsection
• [N/A] updated relevant tests
• [N/A] updated relevant documentation
• [X] updated relevant milestone(s)
• [X] added relevant label(s)
• [N/a] ran regression tests, post a link to the Jenkins job below. How to run regression tests on a PR

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 40.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 79.39%. Comparing base (0ad965c) to head (8cb33a1).

Files	Patch %	Lines
romancal/scripts/okify_regtests.py	40.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1282 +/- ## ========================================== + Coverage 79.36% 79.39% +0.02% ========================================== Files 117 117 Lines 8079 8076 -3 ========================================== Hits 6412 6412 + Misses 1667 1664 -3 ``` | [Flag](https://app.codecov.io/gh/spacetelescope/romancal/pull/1282/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=spacetelescope) | Coverage Δ | | *Carryforward flag | |---|---|---|---| | [nightly](https://app.codecov.io/gh/spacetelescope/romancal/pull/1282/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=spacetelescope) | `62.84% <ø> (+0.06%)` | :arrow_up: | Carriedforward from [0ad965c](https://app.codecov.io/gh/spacetelescope/romancal/commit/0ad965cab7bba1247b9ea3d2be01209ef14fc6ed?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=spacetelescope) | *This pull request uses carry forward flags. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=spacetelescope) to find out more.

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