Okta Error Code Mapping Changes for develop Branch

[SharmilaMS-Hcl]

1.Modified the error mapper with TRANSMISSION_AUTH_CREDENTIALS for invalid Api token (401 error code) and added the timeout parameter in api_client.py file.
2.Updated unit test cases for the same.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.14 ⚠️

Comparison is base (62457c2) 85.37% compared to head (f0c3a7e) 85.23%.

❗ Current head f0c3a7e differs from pull request most recent head cbd6dc8. Consider uploading reports for the commit cbd6dc8 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1434      +/-   ##
===========================================
- Coverage    85.37%   85.23%   -0.14%     
===========================================
  Files          589      585       -4     
  Lines        44541    43777     -764     
===========================================
- Hits         38028    37315     -713     
+ Misses        6513     6462      -51     

Impacted Files	Coverage Δ
...ter_modules/okta/stix_transmission/error_mapper.py	100.00% <ø> (ø)
...ifter_modules/okta/stix_transmission/api_client.py	100.00% <100.00%> (ø)
...r_modules/okta/test/stix_transmission/test_okta.py	100.00% <100.00%> (ø)

... and 12 files with indirect coverage changes

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