chore(deps): update dependency uv to v0.12.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
uv	tools	patch	0.12.2 → 0.12.3

---

Release Notes

astral-sh/uv (uv)

v0.12.3

Compare Source

Released on 2026-08-07.

Python

• Add CPython 3.13.15 (#​20997)

Preview features

• Add --output-format to select automatic, human-readable, or raw-byte output for uv cache size (#​20992)
• Preserve JSON output from uv workspace metadata --quiet while suppressing diagnostics (#​20991)
• Reduce memory usage for large workspaces by streaming uv workspace metadata JSON output (#​20990)

Performance

• Reduce Linux startup latency by initializing the workspace cache before spawning another thread (#​20989)
• Reuse compiled workspace exclusion patterns during workspace discovery (#​20988)
• Speed up conflict-heavy resolutions by avoiding materialized range complements (#​20982)
• Avoid slow procfs reads during Python interpreter discovery on Linux (#​20987)

Documentation

• Add PEP 740 attestations to the GitHub Actions publishing example (#​20986)
• Restrict the GitHub Actions publishing example to Python version tags (#​20973)
• Correct --python-pin to --pin-python in the uv init --bare example (#​20876)

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.14%. Comparing base (dba7c14) to head (a9d8914).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #372   +/-   ##
=======================================
  Coverage   79.14%   79.14%           
=======================================
  Files          11       11           
  Lines         235      235           
  Branches       28       28           
=======================================
  Hits          186      186           
  Misses         45       45           
  Partials        4        4           

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.