fix: dependency fixes for v20

[praneetap]

Issue #, if available:

Description of changes:

Description of how you validated changes:

Checklist:

• Write/update tests
• make pr passes
• Update documentation
• Verify transformed template deploys and application functions as expected
• Add/update example to examples/2016-10-31

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (release/v1.20.0@cebf4a7). Click here to learn what that means.
The diff coverage is 100%.

@@                Coverage Diff                @@
##             release/v1.20.0   #1358   +/-   ##
=================================================
  Coverage                   ?   94.4%           
=================================================
  Files                      ?      78           
  Lines                      ?    4555           
  Branches                   ?     911           
=================================================
  Hits                       ?    4300           
  Misses                     ?     120           
  Partials                   ?     135

Impacted Files	Coverage Δ
samtranslator/model/api/api_generator.py	95.13% <100%> (ø)
samtranslator/model/sam_resources.py	94.01% <100%> (ø)

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