Bump setuptools-golang from 2.7.0 to 2.9.0

[dependabot[bot]]

Bumps setuptools-golang from 2.7.0 to 2.9.0.

Commits

• 541d650 v2.9.0
• c703343 Merge pull request #174 from asottile/windows-new-venv
• 59be4ea remove python 2 virtualenv remnants
• 8bcaef5 Merge pull request #173 from asottile/pre-commit-ci-update-config
• 40c87ac [pre-commit.ci] pre-commit autoupdate
• a1dca78 Merge pull request #172 from asottile/py38-shlex-join
• 0357e24 shlex.join is always available in 3.8+
• af25d7b Merge pull request #171 from asottile/all-repos_autofix_py38-plus
• d721d16 py38-plus
• 9a3fe67 Merge pull request #170 from asottile/pre-commit-ci-update-config
• Additional commits viewable in compare view

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