6.3.7

What's Changed

• Added .NET 9 to test matrix
• Bump Reqnroll from 2.2.0 to 2.2.1 in /src by @dependabot in #116
• Bump Reqnroll.MsTest from 2.2.0 to 2.2.1 in /src by @dependabot in #117
• Bump MSTest from 3.6.2 to 3.6.3 in /src by @dependabot in #118

Full Changelog: 6.3.6...6.3.7