feat: for 261 dotnet 8 is included in core service

[RyanJWard]

Description

We made build changes for 261 to include dotnet 8

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate unit tests.
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved to the PR if any.
• I have assigned this PR to myself.
• I have added the minimum version decorator to any new backend method implemented.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: extrude circle to cylinder)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 94.81%. Comparing base (e778a10) to head (1151354).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...ansys/geometry/core/connection/product_instance.py	0.00%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2226      +/-   ##
==========================================
- Coverage   94.83%   94.81%   -0.02%     
==========================================
  Files         142      142              
  Lines       10583    10585       +2     
==========================================
  Hits        10036    10036              
- Misses        547      549       +2     

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[b-matteo]

LGTM

[RobPasMue]

LGTM!