Bump Microsoft.AspNetCore.Mvc.Core from 2.2.5 to 2.3.0 (#903)

Bumps [Microsoft.AspNetCore.Mvc.Core](https://github.com/dotnet/aspnetcore) from 2.2.5 to 2.3.0.
- [Release notes](https://github.com/dotnet/aspnetcore/releases)
- [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md)
- [Commits](https://github.com/dotnet/aspnetcore/commits)

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.Mvc.Core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

WebAPI/LearningHub.Nhs.Api.UnitTests/LearningHub.Nhs.Api.UnitTests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="FluentAssertions" Version="8.0.1" />
     <PackageReference Include="LearningHub.Nhs.Caching" Version="2.0.0" />
     <PackageReference Include="LearningHub.Nhs.Models" Version="3.0.45" />
-    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.2.5" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.3.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
 	<PackageReference Update="StyleCop.Analyzers" Version="1.1.118">