This commit upgrades to GraphQL Java 23.0. Because this new version brings in java-dataloader 4.0.0, this commit also adapts to a breaking change there. `DataLoaderOptions` is now immutable and calling setters on it will return a new instance. As a result, this commit also changes the `BatchLoaderRegistry` to customize the dataloader by consuming a `DataLoaderOptions.Builder` instead of a `DataLoaderOptions` directly. This only breaks binary compatibility as both `DataLoaderOptions` and `DataLoaderOptions.Builder` have identical APIs. Closes gh-1169
Spring for GraphQL

GraphQL support for Spring applications with GraphQL Java.
Code of Conduct
This project is governed by the Spring Code of Conduct. By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io.
Contributing
All commits must include a Signed-off-by trailer at the end of each commit message to indicate that the contributor agrees to the Developer Certificate of Origin. For additional details, please refer to the blog post Hello DCO, Goodbye CLA: Simplifying Contributions to Spring.
Documentation
This project has reference documentation (published and source), an API reference. There are samples in the 1.0.x branch that will be moved out into a separate repository.
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Getting Support
Check out the Spring GraphQL tags on Stack Overflow. Commercial support is available too.
License
This project is released under version 2.0 of the Apache License.