org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex fails on Java 21

[IncandescentChrysalis]

Description

Registry
Version: 2.6.2.Final

The org.jboss.jandex:jandex-maven-plugin v1.2.3 module defined in the latest 2.* version (2.6.2.Final) fails to build on Java 21.

This is the same problem as discovered in the apache/hop project, solved by updating the dependency to io.smallrye:jandex-maven-plugin v3.1.8 (3.2.0+ changes the index version, causing problems with quarkus).

This update has already been made on main (#4656), hence this would merely be a backport of that update to the 2.* versions.
I see #5079 did not mention this plugin. I am also noticing this robot auto-update is only done on 2.5.x, not 2.6.x

Logs

#0 383.3 [ERROR] Failed to execute goal org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex (make-index) on project apicurio-registry-utils-tools: Execution make-index of goal org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex failed: Cannot read the array length because "bytes" is null -> [Help 1]
#0 383.3 [ERROR] Failed to execute goal org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex (make-index) on project apicurio-registry-utils-kafka: Execution make-index of goal org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex failed: Cannot read the array length because "bytes" is null -> [Help 1]
#0 383.3 [ERROR] Failed to execute goal org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex (make-index) on project apicurio-registry-common: Execution make-index of goal org.jboss.jandex:jandex-maven-plugin:1.2.3:jandex failed: Cannot read the array length because "bytes" is null -> [Help 1]

[apicurio-bot]

Thank you for reporting an issue!

Pinging @andreaTP to respond or triage.

[IncandescentChrysalis]

@EricWittmann This issue to be closed following PR merge?
Or maybe would you take the oppotunity to have the dependencies bot run on 2.6.x?

[EricWittmann]

Yes thank you! This can be closed because it is now fixed on main and on 2.6.x.