build(deps): Bump Microsoft.Extensions.Configuration.Json

Bumps [Microsoft.Extensions.Configuration.Json](https://github.com/dotnet/runtime) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v7.0.0...v8.0.0)

---
updated-dependencies:
- dependency-name: Microsoft.Extensions.Configuration.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Toggl CLI.csproj

@@ -9,7 +9,7 @@
   <ItemGroup>
     <PackageReference Include="CommandLineParser" Version="2.9.1" />
     <PackageReference Include="Microsoft.Extensions.Configuration" Version="7.0.0" />
-    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
   </ItemGroup>