Run all metrics by default

[JosephMarinier]

I included a few small things before the default metrics. Let me know if anything is worth discussing in a separate PR.

• Lock dependencies after 5f4bb76 in Improve faithfulness and conversation progression for S2S #93
  • Lock dependencies in pre-commit, which is also run in the CI, so uv.lock never gets out of sync again.
  • Get package version dynamically from src/eva/__init__.py
  • Remove simulation and metrics versions from pyproject.toml, as they are redundant with src/eva/__init__.py and out of sync since 5f4bb76.
• Revert duplicated _redact_api_keys() from Pr/configurable turn options #45, duplicated with the existing _redact_model_params()
• Remove remaining unreachable ors left after this in make model required for all services #50
• Fully remove deprecated env vars
  • These env vars were not supported; they have been raising a deprecation error for the last 2 months, so we can assume people have stopped using them by now.
• Update Pydantic (this would fail without the previous commit)
• Remove CLI aliases
  • This is a breaking change, but specifying these old CLI aliases/shortcuts will now raise a clear eva: error: unrecognized arguments: ..., so this shouldn't cause silent errors.
  • Update README
• Run all metrics by default
• Support --metric= (work around a bug in Pydantic)