Replace explicit AWS token with tokenless-OIDC authentication [DI-706]

[JackPGreen]

See:

• https://docs.github.com/en/actions/how-tos/secure-your-work/security-harden-deployments/oidc-in-aws
• ADR
• reference hazelcast-docker implementation

Fixes: DI-706

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.57%. Comparing base (def1a13) to head (e7954cc).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #769      +/-   ##
==========================================
- Coverage   94.60%   94.57%   -0.03%     
==========================================
  Files         393      393              
  Lines       25077    25077              
==========================================
- Hits        23723    23716       -7     
- Misses       1354     1361       +7     

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