Bump Microsoft.EntityFrameworkCore.Design from 6.0.28 to 7.0.18

Bumps [Microsoft.EntityFrameworkCore.Design](https://github.com/dotnet/efcore) from 6.0.28 to 7.0.18.
- [Release notes](https://github.com/dotnet/efcore/releases)
- [Commits](dotnet/efcore@v6.0.28...v7.0.18)

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

Signed-off-by: dependabot[bot] <[email protected]>

EFCore.SqlServer.DateOnlyTimeOnly.Test/EFCore.SqlServer.DateOnlyTimeOnly.Test.csproj

@@ -10,7 +10,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.9.2" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Relational.Specification.Tests" Version="6.0.28" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.28" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.18" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="8.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
     <PackageReference Include="xunit" Version="2.7.1" />