MONGOCRYPT-502 has raised a flag that c# bindings tests fail with ubuntu22. This is a bit unexpected due to:

1. All csfle tests pass with ubuntu22 when I temporally enabled ubuntu22 instead ubuntu18. See here.
2. I assume the happened issue related to some .net version incompatibility and ubuntu22. But enabling only latest .net frameworks like (.net 6.0) didn't fix it
3. Also, installing .net via cake scripts similar to what we do in the driver didn't help. See this commit for details.

Given that the driver tests work fine with Ubuntu22, I think it's fine to defer this to later, maybe we can back to this when we will enable ubuntu22 testing in the driver.