Bump the dotnet group with 1 update (#4211)

Bumps Microsoft.AspNetCore.OpenApi from 9.0.7 to 9.0.8

---
updated-dependencies:
- dependency-name: Microsoft.AspNetCore.OpenApi
  dependency-version: 9.0.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

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

Author: dependabot[bot]

docs/authentication/snippets/AspireApp/AspireApp.ApiService/AspireApp.ApiService.csproj

@@ -11,7 +11,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.7" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.8" />
     <PackageReference Include="Aspire.Keycloak.Authentication" Version="9.0.0-preview.5.24551.3" />
   </ItemGroup>