Bump System.Net.Http.Json from 5.0.0 to 6.0.0 (#622)

Bumps [System.Net.Http.Json](https://github.com/dotnet/runtime) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/compare/v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: System.Net.Http.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

src/BlazorAdmin/BlazorAdmin.csproj

@@ -13,7 +13,7 @@
 		<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="5.0.11" PrivateAssets="all" />
 		<PackageReference Include="Microsoft.Extensions.Identity.Core" Version="5.0.11" />
 		<PackageReference Include="Microsoft.Extensions.Logging.Configuration" Version="5.0.0" />
-		<PackageReference Include="System.Net.Http.Json" Version="5.0.0" />
+		<PackageReference Include="System.Net.Http.Json" Version="6.0.0" />
 	</ItemGroup>
 
 	<ItemGroup>