Fix Kaniko builds of Quarkus

Since upgrading Quarkus, our Kaniko build fails with the following error:

INFO[0082] COPY --chown=1001 build/quarkus-app/lib/ /deployments/lib/ 
error building image: error building stage: failed to execute command: getting user group from chown: user: unknown user 1001

See for example:

Job #39745 failed for cdca4888:

This might be fixed when upgrading to Quarkus 2.6 but we have to check.