Require drizzle>=1.13.7

[mcara]

This PR updates the requirement for drizzle package version. See https://github.com/spacetelescope/drizzle/releases/tag/1.13.7 for more details.

Checklist for maintainers

• added entry in CHANGES.rst within the relevant release section
• updated or added relevant tests
• updated relevant documentation
• added relevant milestone
• added relevant label(s)
• ran regression tests, post a link to the Jenkins job below.
  How to run regression tests on a PR
• Make sure the JIRA ticket is resolved properly

Regression tests:
https://plwishmaster.stsci.edu:8081/job/RT/job/JWST-Developers-Pull-Requests/564/

[codecov]

Codecov Report

Base: 78.03% // Head: 77.90% // Decreases project coverage by -0.13% ⚠️

Coverage data is based on head (9ad02a1) compared to base (b6c9f18).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7460      +/-   ##
==========================================
- Coverage   78.03%   77.90%   -0.13%     
==========================================
  Files         455      455              
  Lines       36937    36937              
==========================================
- Hits        28824    28777      -47     
- Misses       8113     8160      +47     

Flag	Coverage Δ
nightly	77.90% <ø> (-0.13%)	⬇️
unit	50.41% <ø> (ø)

Impacted Files	Coverage Δ
jwst/regtest/conftest.py	64.67% <0.00%> (-23.37%)	⬇️
jwst/regtest/regtestdata.py	84.86% <0.00%> (-1.84%)	⬇️

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