build(deps): bump System.Net.Http.Json from 7.0.1 to 8.0.0

Bumps [System.Net.Http.Json](https://github.com/dotnet/runtime) from 7.0.1 to 8.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v7.0.1...v8.0.0)

---
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]>

Author: dependabot[bot]

Refit/Refit.csproj

@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.Text.Json" Version="8.0.0" />
-    <PackageReference Include="System.Net.Http.Json" Version="7.0.1" />
+    <PackageReference Include="System.Net.Http.Json" Version="8.0.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net462'">