chore: update AWS SDK dependencies

[hjgraca]

Please provide the issue number

Issue number: #900

Summary

Changes

This pull request primarily updates several AWS and related NuGet package dependencies to their latest versions across the codebase, and adjusts tests and code to accommodate these changes.

User experience

Please share what the user experience looks like before and after this change

Checklist

Please leave checklist items unchecked if they do not apply to your change.

• Meets tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

Is this a breaking change?

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Disclaimer: We value your time and bandwidth. As such, any pull requests created on non-triaged issues might not be successful.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 77.91%. Comparing base (26a3084) to head (6a4f728).
⚠️ Report is 7 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #999      +/-   ##
===========================================
+ Coverage    77.86%   77.91%   +0.05%     
===========================================
  Files          298      298              
  Lines        11643    11643              
  Branches      1393     1394       +1     
===========================================
+ Hits          9066     9072       +6     
+ Misses        2126     2121       -5     
+ Partials       451      450       -1     

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[hjgraca]

end to end tests green https://github.com/aws-powertools/powertools-lambda-dotnet/actions/runs/17861831447

[hjgraca]

codecov safe to be ignored

[dreamorosi]

Great work on this one, I know it's been tedious to work with but I'm sure our customers will appreciate it.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud