feat(instrumentation-aws-sdk): Add Semantic Convention Support for Amazon Secrets Manager Attributes

[lukeina2z]

This PR adds the aws.secretsmanager.secret.arn semantic convention attribute for the following AWS resources:

AWS Secrets Manager SDK

The Secret ARN is extracted from both request and response objects, and this behavior is covered by unit tests.

Tests Run:
npm run compile
npm run lint
npm run test

All newly added tests pass, and no regressions were found.

Backward Compatibility:
This change is fully backward compatible. It introduces instrumentation for an additional AWS resource without modifying existing behavior in the auto-instrumentation library.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.87%. Comparing base (e6c29be) to head (9e75886).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2971      +/-   ##
==========================================
+ Coverage   89.79%   89.87%   +0.08%     
==========================================
  Files         188      189       +1     
  Lines        9295     9314      +19     
  Branches     1907     1911       +4     
==========================================
+ Hits         8346     8371      +25     
+ Misses        949      943       -6     

Files with missing lines	Coverage Δ
packages/instrumentation-aws-sdk/src/semconv.ts	100.00% <100.00%> (ø)
...ntation-aws-sdk/src/services/ServicesExtensions.ts	97.05% <100.00%> (+0.18%)	⬆️
...rumentation-aws-sdk/src/services/secretsmanager.ts	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes

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