🚀 nuget: bump Microsoft.EntityFrameworkCore.InMemory (#700)

Bumps [Microsoft.EntityFrameworkCore.InMemory](https://github.com/dotnet/efcore) from 7.0.13 to 8.0.0.
- [Release notes](https://github.com/dotnet/efcore/releases)
- [Commits](dotnet/efcore@v7.0.13...v8.0.0)

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

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

src/jmbde/jmbde.csproj

@@ -45,7 +45,7 @@
     <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="8.0.0" />
     <PackageReference
       Include="Microsoft.EntityFrameworkCore.InMemory"
-      Version="7.0.13"
+      Version="8.0.0"
     />
     <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="7.0.13" />
     <PackageReference