Bump graphql-core from 3.2.3 to 3.2.6

Bumps [graphql-core](https://github.com/graphql-python/graphql-core) from 3.2.3 to 3.2.6.
- [Release notes](https://github.com/graphql-python/graphql-core/releases)
- [Commits](graphql-python/graphql-core@v3.2.3...v3.2.6)

---
updated-dependencies:
- dependency-name: graphql-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -46,7 +46,7 @@ pydantic==1.10.21
 Werkzeug==3.1.3; python_version > "3.8"
 Werkzeug==3.0.6; python_version == "3.8"
 
-graphql-core==3.2.3
+graphql-core==3.2.6
 gql==3.5.1
 
 websockets==15.0; python_version > "3.8"