Update Kotlin to 2.0.20

[gsmet]

No description provided.

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This is the status report for running Quarkus Documentation CI on commit 67a2205.

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Status for workflow Quarkus CI

This is the status report for running Quarkus CI on commit 67a2205.

Failing Jobs

Status	Name	Step	Failures	Logs	Raw logs	Build scan
✔️	Devtools Tests - JDK 17			Logs	Raw logs	🔍
✖	Devtools Tests - JDK 21	Upload build reports	⚠️ Check →	Logs	Raw logs	🔍
✔️	Devtools Tests - JDK 17 Windows			Logs	Raw logs	🔍

You can consult the Develocity build scans.

[mschorsch]

@gsmet could you backport this pull request to 3.14.2?