Update to Kotlin 1.6.0

[evanchooly]

This is actually bumping to 1.6.0-RC for now. This is to start getting the pieces in place for the eventual release. I'm filing the PR now to make sure we get all the workarounds removed for Kotlin on Java 16. It obviously can't be merged until 1.6.0 is final.

[quarkus-bot]

This workflow status is outdated as a new workflow run has been triggered.

Failing Jobs - Building a221e51

Status	Name	Step	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 11
✖	JVM Tests - JDK 11 Windows	Upload gc.log	⚠️ Check →	Logs	Raw logs
✔️	JVM Tests - JDK 17

[famod]

Nice to see some movement on this front. 🙂

Btw, this PR now has some merge conflicts.

[famod]

@evanchooly RC2 is out

[famod]

I've rebased this and added RC2.

[quarkus-bot]

This workflow status is outdated as a new workflow run has been triggered.

Failing Jobs - Building 206040a

Status	Name	Step	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 11
✖	JVM Tests - JDK 11 Windows	Build	⚠️ Check →	Logs	Raw logs
✔️	JVM Tests - JDK 17

⚠️ Errors occurred while downloading the build reports. This report is incomplete.

[famod]

Rebased again and updated to final 1.6.0. Will probably take a separate stab at those Java 18 problems in another PR.

@gsmet this might be a nice (noteworthy?) addition to 2.5.0.Final.

[quarkus-bot]

This workflow status is outdated as a new workflow run has been triggered.

Failing Jobs - Building c9e53a4

Status	Name	Step	Failures	Logs	Raw logs
✖	JVM Tests - JDK 11	Build	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 17

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 11 #

- Failing: integration-tests/kafka-streams 

📦 integration-tests/kafka-streams

✖ io.quarkus.it.kafka.streams.KafkaStreamsPropertiesTest.testProperties - More details - Source on GitHub

java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at io.quarkus.test.junit.QuarkusTestExtension.throwBootFailureException(QuarkusTestExtension.java:584)
	at io.quarkus.test.junit.QuarkusTestExtension.interceptTestClassConstructor(QuarkusTestExtension.java:657)

[gsmet]

As discussed on Zulip, let's make sure it still works with Java 18 EA and let's not backport it to 2.5.

[famod]

let's make sure it still works with Java 18 EA

Done, verified locally.

Addressed.