uv version management is all over the place

[emyller]

We manage uv version using mechanics such as:

• flagsmith/.github/actions/install-uv/action.yml

  Line 20 in 13eeb46

  version-file: ${{ inputs.working-directory }}/pyproject.toml

• flagsmith/api/pyproject.toml

  Line 161 in 13eeb46

  required-version = ">=0.11.18" # Ensure this matches the version in .pre-commit-config.yaml

• flagsmith/mcp/pyproject.toml

  Line 38 in 13eeb46

  required-version = ">=0.11.18" # Ensure this matches the version in .pre-commit-config.yaml

• flagsmith/.pre-commit-config.yaml

  Line 74 in 13eeb46

  rev: 0.11.18 # Ensure this matches the version in api/pyproject.toml

• Other untraced occasions?

Acceptance criteria

1. Renovate manages uv a unified version repository-wide.