Bump Microsoft.EntityFrameworkCore.Design from 9.0.11 to 9.0.12 (#317)

---
updated-dependencies:
- dependency-name: Microsoft.EntityFrameworkCore.Design
  dependency-version: 9.0.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

GraphQLNetExample/GraphQLNetExample.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="GraphQL.Server.Transports.AspNetCore" Version="8.3.3" />
     <PackageReference Include="GraphQL.Server.Ui.Altair" Version="8.3.3" />
     <PackageReference Include="GraphQL.SystemTextJson" Version="8.8.3" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.11">
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.12">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>