fix(auth): add support for OAuth authentication in parallel to JWT

[kritikash18]

Description

• fixes #676
• upgraded IMS library to 6.5.0 which supports both JWT and OAuth based on config type
• updated e2e tests to include OAuth authentication also
• added validations for OAuth config as well

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have signed the Adobe Open Source CLA.
• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.67%. Comparing base (30b3d18) to head (3a401af).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #691   +/-   ##
=======================================
  Coverage   99.67%   99.67%           
=======================================
  Files          64       64           
  Lines        1542     1551    +9     
  Branches      214      218    +4     
=======================================
+ Hits         1537     1546    +9     
  Misses          5        5           

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.