fix(ci): Use python -m build instead of uv build for semantic-release

The semantic-release action runs in its own Docker container where uv
is not available. Use pip + build module instead.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: chriscarrollsmith

pyproject.toml

@@ -44,7 +44,7 @@ package = true
 [tool.semantic_release]
 assets = []
 build_command_env = []
-build_command = "uv build"
+build_command = "pip install build && python -m build"
 commit_message = "{version}\n\nAutomatically generated by python-semantic-release"
 commit_parser = "conventional"
 logging_use_named_masks = false