Release 0.27.1

[knope-bot]

Important

Merging this pull request will create this release

Fixes

• Remove non-existent CHANGELOG.md references from UV and Poetry templates (fix: Remove non-existent CHANGELOG.md references from UV and Poetry templates #1344)
• Initialize optional lists as UNSET, not [] (fix: Initialize optional lists as UNSET, not [] #1346)
• Correct docstring typos in client template (fix: Correct docstring typos in client template #1347)
• Replace bare except blocks with specific exception types (fix: Replace bare except blocks with specific exception types #1348)

Update uv_build to 0.9

#1352 by @johnthagen

uv has been in the 0.9.x release cycle for a while, so update templates to use the corresponding uv_build range.