Upgrade to .NET 8 and associated nuget libs

[waf]

Upgrade to .NET 8

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (e4c6752) 77.5% compared to head (639b441) 77.4%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #320 +/- ## ======================================= - Coverage 77.5% 77.4% -0.1% ======================================= Files 83 83 Lines 5584 5583 -1 Branches 736 736 ======================================= - Hits 4328 4323 -5 - Misses 988 992 +4 Partials 268 268 ```

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