## Summary of changes

- Adds (and removes) some more smoke tests
- Fixes an issue with recent glibc version (in `debian:trixie`) that
causes native tracer to fail to load

## Reason for change

Initial .NET 10 tests show that `debian:trixie` causes the .NET tracer
to fail to load with:

```
/opt/datadog/./linux-x64/Datadog.Tracer.Native.so: cannot enable executable stack as shared object requires: Invalid argument
```

This is due to the fact that debian 13 uses glibc 2.41 which stopped
automatically enabling executable stacks when loading shared libraries.
This PR addresses the root cause, and adds smoke tests to demonstrate
that.

## Implementation details

- Added smoke tests for `debian:trixie`
- Removed some smoke tests for older runtime/distro coverage - ensures
we still cover all the TFMs and distros, but removes some redundancy
- Fixes the glibc issue (TBC)

## Test coverage

Adds some more smoke tests

## Other details

We discovered this in the .NET 10 upgrade PR, but Microsoft have [since
_stopped_ publishing](dotnet/dotnet-docker#6541)
`debian` images 😅 So I recreated the images and .NET 8/ .NET 9 versions
so we can test it right now.

---------

Co-authored-by: Tony Redondo <tony.redondo@datadoghq.com>

With the dotnet 10 release, Microsoft has removed Debian based docker images. See dotnet/dotnet-docker#6541

So, the base used in this repo is being switched to Ubuntu, which is the closest alternative without rolling our own image.