Bump Microsoft.EntityFrameworkCore.Design in /Bazzigg.Database.Test

Bumps [Microsoft.EntityFrameworkCore.Design](https://github.com/dotnet/efcore) from 5.0.0 to 6.0.7.
- [Release notes](https://github.com/dotnet/efcore/releases)
- [Commits](dotnet/efcore@v5.0.0...v6.0.7)

---
updated-dependencies:
- dependency-name: Microsoft.EntityFrameworkCore.Design
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Bazzigg.Database/Bazzigg.Database.csproj

@@ -19,7 +19,7 @@
 
   <ItemGroup>
     <PackageReference Include="Kartrider.API" Version="2.0.2" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="5.0.0">
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.7">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>