Bug: Problems upgrading pydantic

[Vince-janv]

Describe the bug
@beatrizsavinhas discovered and I confirmed that if one installs the latest version of pydantic (2.10.5) almost all of the delivery report tests break.

The problem seems to be the lack of discriminant when instantiating the cg.models.analysis.NextflowAnalysis in cg.meta.workflow.nf_analysis.NfAnalysisAPI.parse_analysis. The bug was not investigated further.

To Reproduce
Steps to reproduce the behavior:

1. Run pip install pydantic=2.10.5 on your local computer
2. Run pytests

Additional context
I believe this previous bug to have been caused by the same issue:
#3775