build(deps): Bump DynamicData from 7.4.3 to 7.4.9

Bumps [DynamicData](https://github.com/reactiveui/DynamicData) from 7.4.3 to 7.4.9.
- [Release notes](https://github.com/reactiveui/DynamicData/releases)
- [Changelog](https://github.com/reactivemarbles/DynamicData/blob/main/ReleaseNotes.md)
- [Commits](reactivemarbles/DynamicData@7.4.3...7.4.9)

---
updated-dependencies:
- dependency-name: DynamicData
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/ReactiveMarbles.Mvvm.Tests/ReactiveMarbles.Mvvm.Tests.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="DynamicData" Version="7.4.3" />
+        <PackageReference Include="DynamicData" Version="7.4.9" />
         <PackageReference Include="FluentAssertions" Version="6.2.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.11.0" />
         <PackageReference Include="Microsoft.Reactive.Testing" Version="5.0.0" />

src/ReactiveMarbles.Mvvm/ReactiveMarbles.Mvvm.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="DynamicData" Version="7.4.3" />
+      <PackageReference Include="DynamicData" Version="7.4.9" />
       <PackageReference Include="ReactiveMarbles.Locator" Version="1.1.1" />
       <PackageReference Include="System.Reactive" Version="5.0.0" />
     </ItemGroup>