v1.9.0 - Add DOMjudge v9 Support

What's Changed

• Potential fix for code scanning alert no. 1: Workflow does not contain permissions by @mmcinnestaylor in #53
• Add JSON/YAML DOMjudge file generation and export support by @ramonicv in #55
• Documentation updates + check-in validation by @mmcinnestaylor in #54
• Update manual to use DOMjudge v9 by @hoangvu5 in #56

New Contributors

• @ramonicv made their first contribution in #55

Full Changelog: v1.8.1...v1.9.0