chore: Update examples with latest nuget versions. Fix PTENV check in tests

[hjgraca]

Please provide the issue number

Issue number: closes #1029

Summary

Changes

This pull request updates the examples to the latest nuget package verions and Powertools v3
This also fixes an issue in CI when testing if the string ends with PTENV/
It fails because ECS adds the app id AWS_ECS_EC2
Now we only check for Contains

[xUnit.net 00:00:00.30]       Assert.EndsWith() Failure: String end does not match
--
[xUnit.net 00:00:00.30]       String:       "PT/Logging/3.0.0 PTEnv/AWS_ECS_EC2"
[xUnit.net 00:00:00.30]       Expected end: "PTEnv/"

User experience

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

Checklist

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• 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

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.10%. Comparing base (cfa4560) to head (98f1342).
⚠️ Report is 14 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1030      +/-   ##
===========================================
- Coverage    78.13%   78.10%   -0.03%     
===========================================
  Files          298      298              
  Lines        12003    12003              
  Branches      1441     1441              
===========================================
- Hits          9378     9375       -3     
- Misses        2163     2164       +1     
- Partials       462      464       +2     

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[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