CI: Add pre-commit config to update uv.lock

[intgr]

• Also django-stubs: CI: Add pre-commit config to update uv.lock django-stubs#2881

[intgr]

Looks like it doesn't work because there's no network access from pre-commit.ci? Not sure whether it's a bug or on purpose.

[Copilot]

Pull Request Overview

This PR adds a pre-commit hook to automatically update the uv.lock file when dependencies change, while skipping this hook in the pre-commit.ci environment. This ensures local development keeps the lock file in sync, similar to the approach used in django-stubs.

Key Changes:

• Adds uv-pre-commit hook configuration to keep uv.lock updated
• Configures pre-commit.ci to skip the uv-lock hook

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