Bump .NET NuGet packages

Bumps .NET dependencies to their latest versions for the .NET 9.0.100 SDK.

Bumps Microsoft.AspNetCore.AzureAppServices.HostingStartup from 9.0.0-rc.2.24474.3 to 9.0.0.
Bumps Microsoft.AspNetCore.Mvc.Testing from 9.0.0-rc.2.24474.3 to 9.0.0.
Bumps Microsoft.AspNetCore.OpenApi from 9.0.0-rc.2.24474.3 to 9.0.0.
Bumps Microsoft.Extensions.ApiDescription.Server from 9.0.0-rc.2.24474.3 to 9.0.0.
Bumps Microsoft.Extensions.TimeProvider.Testing from 9.0.0-preview.9.24507.7 to 9.0.0.

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.AzureAppServices.HostingStartup
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.AspNetCore.Mvc.Testing
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.AspNetCore.OpenApi
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.Extensions.ApiDescription.Server
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: Microsoft.Extensions.TimeProvider.Testing
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: costellobot <102549341+costellobot@users.noreply.github.com>

Directory.Packages.props

@@ -11,11 +11,11 @@
     <PackageVersion Include="JustEat.HttpClientInterception" Version="4.3.0" />
     <PackageVersion Include="MartinCostello.Logging.XUnit" Version="0.4.0" />
     <PackageVersion Include="MartinCostello.OpenApi.Extensions" Version="1.0.0-beta.306" />
-    <PackageVersion Include="Microsoft.AspNetCore.AzureAppServices.HostingStartup" Version="9.0.0-rc.2.24474.3" />
-    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.0-rc.2.24474.3" />
-    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="9.0.0-rc.2.24474.3" />
-    <PackageVersion Include="Microsoft.Extensions.ApiDescription.Server" Version="9.0.0-rc.2.24474.3" />
-    <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.0.0-preview.9.24507.7" />
+    <PackageVersion Include="Microsoft.AspNetCore.AzureAppServices.HostingStartup" Version="9.0.0" />
+    <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.0" />
+    <PackageVersion Include="Microsoft.AspNetCore.OpenApi" Version="9.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.ApiDescription.Server" Version="9.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.TimeProvider.Testing" Version="9.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="Microsoft.OpenApi" Version="1.6.22" />
     <PackageVersion Include="Microsoft.OpenApi.Readers" Version="1.6.22" />