Version 2.5.4 is a maintenance release. This version dropped Jcenter publishing and is the first one to be only available on Maven Central.
It also contains some improvements around the Gradle plugin and codegen.

Full Changelog

📦 Publishing

• [Build scripts] Remove Jcenter publishing (#2955)

👷‍ Fixes

• [Gradle Plugin] Made checkApolloVersions more lazy (#2935)
• [Codegen] Fix inline fragments inside inline fragments (#2928)
• [Codegen] Correctly decode defaultValue in schema.json (#2917)
• [Runtime] Fix looking up the ResponseFieldMapper when using delegates (#2945)

📖 Documentation

• [Docs] Fix the location of generated files (#2934)

❤️ External contributors

Many thanks to @ansman and @lorensr for their contributions!