Upgrade to GraphQL Java 25.0-beta4

[bclozel]

See all beta releases so far:

• https://github.com/graphql-java/graphql-java/releases/tag/v25.0.beta-4
• https://github.com/graphql-java/graphql-java/releases/tag/v25.0-beta-3
• https://github.com/graphql-java/graphql-java/releases/tag/v25.0.beta-2
• https://github.com/graphql-java/graphql-java/releases/tag/25.0.beta-1