Bump Microsoft.EntityFrameworkCore.Relational in /src

Bumps [Microsoft.EntityFrameworkCore.Relational](https://github.com/dotnet/efcore) from 6.0.8 to 6.0.9.
- [Release notes](https://github.com/dotnet/efcore/releases)
- [Commits](dotnet/efcore@v6.0.8...v6.0.9)

---
updated-dependencies:
- dependency-name: Microsoft.EntityFrameworkCore.Relational
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/AzureIoTHub.Portal.Infrastructure/AzureIoTHub.Portal.Infrastructure.csproj

@@ -15,7 +15,7 @@
     <PackageReference Include="Microsoft.Extensions.Configuration.Binder" Version="6.0.0" />
     <PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks.EntityFrameworkCore" Version="6.0.8" />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.8" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.8" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.9" />
     <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.6" />
   </ItemGroup>