build(deps-dev): bump uv-build from 0.12.1 to 0.12.3

[dependabot]

Bumps uv-build from 0.12.1 to 0.12.3.

Release notes

Sourced from uv-build's releases.

0.12.3

Release Notes

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)

Install uv 0.12.3

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/uv/releases/download/0.12.3/uv-installer.sh | sh

Install prebuilt binaries via powershell script

powershell -ExecutionPolicy Bypass -c "irm https://releases.astral.sh/github/uv/releases/download/0.12.3/uv-installer.ps1 | iex"

Download uv 0.12.3

File	Platform	Checksum
uv-aarch64-apple-darwin.tar.gz	Apple Silicon macOS	checksum
uv-x86_64-apple-darwin.tar.gz	Intel macOS	checksum
uv-aarch64-pc-windows-msvc.zip	ARM64 Windows	checksum
uv-i686-pc-windows-msvc.zip	x86 Windows	checksum

... (truncated)

Changelog

Sourced from uv-build's changelog.

0.12.3

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)

0.12.2

Released on 2026-08-05.

Python

• Add CPython 3.15.0rc1 (#20948)
• Add CPython 3.14.7 (#20971)

Enhancements

• Ensure diagnostic hints end with a newline to prevent malformed terminal output (#20959)

Preview features

• Audit one or all installed tools with uv tool audit (#20921)
• Report physically reclaimed disk space during cache cleanup with the cache-physical-space preview feature (#20925)

Configuration

• Add UV_RUN_RLIMIT_NOFILE to set the open-file limit for commands launched by uv run (#20926)

Performance

... (truncated)

Commits

• 5072309 Bump version to 0.12.3 (#20998)
• 57c6ca2 Sync latest Python releases: Include 3.13.15 (#20997)
• c8d39cb Avoid materializing complements during resolution (#20982)
• 544157b Add --output-format to uv cache size (#20992)
• 5d4a62d Preserve workspace metadata output in quiet mode (#20991)
• 1979349 Reuse compiled workspace exclusion patterns (#20988)
• b60da7a Stream workspace metadata JSON serialization (#20990)
• 91b5613 Initialize the workspace cache before spawning the main thread (#20989)
• 8259776 Update issue context when comments add useful information (#20980)
• 6348636 Avoid reading procfs to detect the Linux OS type (#20987)
• Additional commits viewable in compare view

[seonghobae]

@dependabot rebase