Takumi Ishikawa

add node16 and update lts, latest, and current tagged images

3

I added Node.js v16, which is latest and current version according to [docker hub](https://hub.docker.com/_/node), and moved LTS tag to v14.

./gradlew spotlessGroovy fails when containing Closure like () -> {}

1

## Summary `./gradlew spotlessGroovy` fails on the following simple groovy code. ```groovy class A { def closure = () -> { println("Hello") } } ``` A part of error: ```...

Spring Boot Gradle plugin >= v2.5.0 outputs both executable fat jar and plain jar, and GAE Gradle plugin uses plain one.

9

This is not a bug, but a feature request. Spring Boot Gradle plugin in the current version generates both executable fat jar and plain jar in the default settings like...

### Checklist - [x] All new jobs, commands, executors, parameters have descriptions - [x] Examples have been added for any significant new features - [x] README has been updated, if...