Bump GraphQL from 8.0.2 to 8.1.0 in /src

Bumps [GraphQL](https://github.com/graphql-dotnet/graphql-dotnet) from 8.0.2 to 8.1.0.
- [Release notes](https://github.com/graphql-dotnet/graphql-dotnet/releases)
- [Commits](graphql-dotnet/graphql-dotnet@8.0.2...8.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

src/Directory.Packages.props

@@ -8,7 +8,7 @@
     <PackageVersion Include="EfLocalDb" Version="19.0.4" />
     <PackageVersion Include="Fody" Version="6.8.2" />
     <PackageVersion Include="graphiql" Version="2.0.0" />
-    <PackageVersion Include="GraphQL" Version="8.0.2" />
+    <PackageVersion Include="GraphQL" Version="8.1.0" />
     <PackageVersion Include="GraphQL.MicrosoftDI" Version="8.0.2" />
     <PackageVersion Include="GraphQL.SystemTextJson" Version="8.0.2" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="27.0.2" />