Bump GraphQL from 7.5.0 to 7.6.0 (#142)

Bumps [GraphQL](https://github.com/graphql-dotnet/graphql-dotnet) from 7.5.0 to 7.6.0.
- [Release notes](https://github.com/graphql-dotnet/graphql-dotnet/releases)
- [Commits](graphql-dotnet/graphql-dotnet@7.5.0...7.6.0)

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

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

Author: dependabot[bot]

GraphQLNetExample/GraphQLNetExample.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="GraphQL" Version="7.5.0" />
+    <PackageReference Include="GraphQL" Version="7.6.0" />
     <PackageReference Include="GraphQL.MicrosoftDI" Version="7.5.0" />
     <PackageReference Include="GraphQL.Server.Transports.AspNetCore" Version="7.5.0" />
     <PackageReference Include="GraphQL.Server.Ui.Altair" Version="7.5.0" />