Pin BayesicFitting to < 3.1.0

[hbushouse]

This PR pins the BayesicFitting package to < 3.1.0, which was released on PyPi in the past couple hours, because it causes an import failure, due to an error in the package's __init__. dokester/BayesicFitting#20 has been filed. This is causing all PR CI's to fail.

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

[codecov]

Codecov Report

Base: 78.53% // Head: 78.52% // Decreases project coverage by -0.02% ⚠️

Coverage data is based on head (2959c23) compared to base (f25d3ee).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7435      +/-   ##
==========================================
- Coverage   78.53%   78.52%   -0.02%     
==========================================
  Files         455      455              
  Lines       39084    39148      +64     
==========================================
+ Hits        30695    30740      +45     
- Misses       8389     8408      +19     

Flag	Coverage Δ		*Carryforward flag
nightly	78.51% <ø> (ø)		Carriedforward from f25d3ee
unit	51.41% <ø> (+0.03%)	⬆️

*This pull request uses carry forward flags. Click here to find out more.

Impacted Files	Coverage Δ
jwst/scripts/minimum_deps.py	24.00% <0.00%> (-1.00%)	⬇️
jwst/associations/asn_edit.py	66.66% <0.00%> (-0.75%)	⬇️
jwst/model_blender/blendmeta.py	83.05% <0.00%> (-0.71%)	⬇️
jwst/scripts/collect_pipeline_cfgs.py	13.33% <0.00%> (-0.46%)	⬇️
jwst/ami/lg_model.py	62.03% <0.00%> (-0.34%)	⬇️
jwst/refpix/irs2_subtract_reference.py	83.97% <0.00%> (-0.30%)	⬇️
jwst/ami/utils.py	87.96% <0.00%> (-0.29%)	⬇️
jwst/ami/nrm_core.py	20.61% <0.00%> (-0.28%)	⬇️
jwst/fits_generator/template.py	16.98% <0.00%> (-0.27%)	⬇️
jwst/extract_1d/soss_extract/atoca_utils.py	69.64% <0.00%> (-0.26%)	⬇️
... and 16 more

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[zacharyburnett]

LGTM