Support Gradle configuration cache

[joshschriever]

📌 References

• Closes Support configuration caching #50

🥅 What is the goal?

• Update Gradle, Kotlin, Java, AGP, publishing plugin, bundletool, etc
• Support Gradle configuration cache

💻 How is it implemented?

• With the latest Gradle version, the only change required to support configuration caching was fixing a problem with deserializing sealed class types used as task inputs. Gradle uses its own serialization model for configuration caching, and for some reason, sealed class object subtypes were getting deserialized as some instance of the object. The fix was just to always use is checks instead of == or the implicit === used is when statements.