Update ghcr.io/astral-sh/uv Docker tag to v0.12.15

[ll-renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/astral-sh/uv	final	patch	0.12.13 → 0.12.15

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Release Notes

astral-sh/uv (ghcr.io/astral-sh/uv)

v0.12.15

Compare Source

Released on 2026-09-15.

This release fixes a regression in 0.12.14 that lead to rejecting valid installation commands such as using
uv pip install --system in python:* docker images or when using uv pip install --target .. (#​21699)

Performance

• Speed up cold-cache resolution and HTTP cache revalidation by batching cache writes (#​21675)

Bug fixes

• Revert "Reject symlinked wheel installation destinations" (#​21699)

v0.12.14

Compare Source

Released on 2026-09-15.

Package-operation errors now use uv's standard diagnostics, with consistent hints and compact, labeled cause chains. (#​17110, #​21599, #​21603)

Package-operation exit codes now reflect the underlying cause: expected failures return 1, while recognized operational and internal failures return 2. (#​17110)

Enhancements

• Resume interrupted downloads with HTTP Range requests when supported (#​21570)
• Show underlying causes and hints in user warnings (#​21565)
• Show resolver hints for failed uv tool upgrade operations (#​21566)

Preview features

• Export multiple dependency selections from a shared lockfile in one uv export --batch invocation with the batch-export preview feature (#​21618)

Performance

• Speed up dependency resolution from local wheelhouses by reading wheel metadata in a single blocking task (#​21619)
• Speed up cold resolution against large package indexes by parsing Simple API responses in bounded background workers (#​21593)
• Speed up warm-cache resolution by decoding fresh HTTP cache entries in the cache-read task (#​21621)

Bug fixes

• Select releases that satisfy required-environments within each resolver fork instead of combining incompatible wheel coverage across forks (#​21672)
• Install packages with paths longer than MAX_PATH on Windows systems without long-path support enabled (#​21625)
• Prevent uv python install from overwriting valid unmanaged Python symlinks with relative targets on Unix (#​21639)
• Redact credentials and signatures from missing-path-segment URL errors (#​21616)
• Avoid exceeding the configured retry budget when cached HTTP responses fail revalidation (#​21640)
• Prefer bin/python over bin/python3 when discovering interpreters in Unix environments (#​21559)
• Suppress managed-Python fallback warnings under --quiet (#​21565)
• Keep failed uv tool upgrade errors visible with -q while suppressing them with -qq (#​21566)

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (8359194) to head (103c28d).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

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##              main      #732   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files           16        16           
  Lines          356       356           
  Branches         3         3           
=========================================
  Hits           356       356           

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