Bump System.Net.Http.Json from 8.0.0 to 9.0.0 (#1010)

Bumps [System.Net.Http.Json](https://github.com/dotnet/runtime) from 8.0.0 to 9.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.0...v9.0.0)

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

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

Author: dependabot[bot]

SpotifyAPI.Web.Examples/Example.BlazorWASM/Example.BlazorWASM.csproj

@@ -7,7 +7,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="7.0.20" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.0" PrivateAssets="all" />
-    <PackageReference Include="System.Net.Http.Json" Version="8.0.0" />
+    <PackageReference Include="System.Net.Http.Json" Version="9.0.0" />
   </ItemGroup>
 
   <ItemGroup>