Bump to JDK 11

[LossyDragon]

Description

Update dependencies. Update gradle Target Java 11 Update CI to use Java 11

BREAKING: Protobufs is using v26+, GeneratedMessageV3 is now GeneratedMessage and is not backwards compatible. See: https://protobuf.dev/news/2023-12-05/#breaking-compatibility-with-old-generated-code

Note: This PR is kind of a test to make sure github actions work correctly with the newer Java target. While Java 1.8 is still supported for a while longer, some dependencies are starting to move away from it.

Android support is still compatible with desugaring for API 21 and lower.

Checklist

• [x] Code compiles correctly
• [x] All tests passing
• [x] Samples run successfully
• [x] Extended the README / documentation, if necessary