v5.0.3

What's Changed

• Test Python 3.7 on Ubuntu 22.04, and add Ubuntu 3.13 by @EliahKagan in #58
• Add SECURITY.md, referencing the GitPython one by @EliahKagan in #59
• Specify explicit contents: read workflow permissions by @EliahKagan in #60
• Add CI test job for no-GIL (free-threaded) Python 3.13 by @EliahKagan in #61
• Bump actions/checkout from 4 to 5 by @dependabot[bot] in #62
• Bump actions/setup-python from 5 to 6 by @dependabot[bot] in #63
• Bump actions/checkout from 5 to 6 by @dependabot[bot] in #64

Full Changelog: v5.0.2...v5.0.3