Update dependency uv_build to >=0.12.3,<0.12.4

Sylva Renovate botrequested to merge
renovate/patch-python-build-system into main

This MR contains the following updates:

Package Change Age Confidence
uv_build (source, changelog) >=0.12.2,<0.12.3 -> >=0.12.3,<0.12.4 age confidence

Release Notes

astral-sh/uv (uv_build)

v0.12.3

Compare Source

Released on 2026-08-07.

Python
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)

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