chore(deps): update DynamicData requirement from 6.* to 7.* (#118)

Updates the requirements on [DynamicData](https://github.com/reactiveui/DynamicData) to permit the latest version.
- [Release notes](https://github.com/reactiveui/DynamicData/releases)
- [Changelog](https://github.com/reactivemarbles/DynamicData/blob/main/ReleaseNotes.md)
- [Commits](reactivemarbles/DynamicData@6.0.0.2301-beta...7.1.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

src/Punchclock.Tests/Punchclock.Tests.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="DynamicData" Version="6.*" />
+    <PackageReference Include="DynamicData" Version="7.*" />
     <PackageReference Include="splat" Version="9.*" />
   </ItemGroup>