Bump Microsoft.EntityFrameworkCore.InMemory from 8.0.28 to 9.0.17

---
updated-dependencies:
- dependency-name: Microsoft.EntityFrameworkCore.InMemory
  dependency-version: 9.0.17
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

api/tests/ProposalSystem.Tests/ProposalSystem.Tests.csproj

@@ -18,7 +18,7 @@
     </PackageReference>
     <PackageReference Include="FluentAssertions" Version="7.2.2" />
     <PackageReference Include="NSubstitute" Version="5.3.0" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="8.0.28" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.InMemory" Version="9.0.17" />
     <PackageReference Include="coverlet.collector" Version="6.0.4">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>