Bump GraphQL.Client from 6.0.0 to 6.0.2

Bumps [GraphQL.Client](https://github.com/graphql-dotnet/graphql-client) from 6.0.0 to 6.0.2.
- [Release notes](https://github.com/graphql-dotnet/graphql-client/releases)
- [Commits](graphql-dotnet/graphql-client@v6.0.0...v6.0.2)

---
updated-dependencies:
- dependency-name: GraphQL.Client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

SimpleXamarinGraphQL/SimpleXamarinGraphQL.csproj

@@ -10,7 +10,7 @@
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="Xamarin.Forms" Version="5.0.0.2622" />
-        <PackageReference Include="GraphQL.Client" Version="6.0.0" />
+        <PackageReference Include="GraphQL.Client" Version="6.0.2" />
         <PackageReference Include="AsyncAwaitBestPractices.MVVM" Version="7.0.0" />
         <PackageReference Include="Polly" Version="8.2.0" />
         <PackageReference Include="modernhttpclient-updated" Version="3.4.3" />