Improve is_unifi_os check

What's Changed

• Bump to v73 (#626) @Kane610
• Re-initialize variable to default state for each attempt (#625) @xconverge
• Bump pytest-cov from 4.1.0 to 5.0.0 (#623) @dependabot
• Bump pre-commit from 3.6.2 to 3.7.0 (#624) @dependabot
• Bump ruff from 0.3.3 to 0.3.4 (#621) @dependabot
• Bump pytest-asyncio from 0.23.5.post1 to 0.23.6 (#620) @dependabot
• Bump ruff from 0.3.2 to 0.3.3 (#619) @dependabot
• Enable Ruff Perf lint (#617) @Kane610
• Bump pytest-asyncio from 0.23.5 to 0.23.5.post1 (#616) @dependabot
• Bump pytest from 8.1.0 to 8.1.1 (#614) @dependabot
• Bump mypy from 1.8.0 to 1.9.0 (#613) @dependabot
• Bump ruff from 0.3.1 to 0.3.2 (#615) @dependabot
• Bump release-drafter/release-drafter from 5 to 6 (#608) @dependabot
• Bump actions/setup-python from 1 to 5 (#609) @dependabot
• Bump actions/checkout from 2 to 4 (#610) @dependabot
• Bump ruff from 0.3.0 to 0.3.1 (#611) @dependabot
• Update dependabot config (#607) @Kane610
• Bump ruff to v0.3.0 (#606) @Kane610
• Bump pytest from 8.0.2 to 8.1.0 (#604) @dependabot