Remove setuptools_git build dependency causing invalid version on shallow clones

[Copilot]

The CI build fails because setuptools_git (listed in pyproject.toml's build-system.requires) invokes vcs_versioning to derive a version from git tags. On GitHub Actions' shallow clone, this produces 0.0.post1.post1+gc6054028c — an invalid PEP 440 version — causing pip to abort before the build even starts.

Changes

• pyproject.toml: Drop setuptools_git>=1.0 from build-system.requires. The package already defines its version statically in dronecan_gui_tool/version.py (__version__ = 1, 2, 28), so this dependency was never needed.

# Before
requires = ["setuptools>=42", "setuptools_git>=1.0"]

# After
requires = ["setuptools>=42"]