Bump GraphQL and GraphQL.SystemTextJson

Bumps GraphQL from 8.8.3 to 8.8.4
Bumps GraphQL.SystemTextJson from 8.8.3 to 8.8.4

---
updated-dependencies:
- dependency-name: GraphQL
  dependency-version: 8.8.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: GraphQL.SystemTextJson
  dependency-version: 8.8.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/Directory.Packages.props

@@ -9,9 +9,9 @@
     <PackageVersion Include="EfLocalDb" Version="23.7.0" />
     <PackageVersion Include="EfOrderBy" Version="1.0.0" />
     <PackageVersion Include="graphiql" Version="2.0.0" />
-    <PackageVersion Include="GraphQL" Version="8.8.3" />
+    <PackageVersion Include="GraphQL" Version="8.8.4" />
     <PackageVersion Include="GraphQL.MicrosoftDI" Version="8.8.3" />
-    <PackageVersion Include="GraphQL.SystemTextJson" Version="8.8.3" />
+    <PackageVersion Include="GraphQL.SystemTextJson" Version="8.8.4" />
     <PackageVersion Include="MarkdownSnippets.MsBuild" Version="28.0.1" />
     <PackageVersion Include="Microsoft.AspNetCore.Mvc.Testing" Version="10.0.3" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.11.0" />