Upgrade GitLab Runner to chart version 0.56.0 and app version 16.3.0

No problems deploying GitLab Runner to K3s cluster via Helm Chart and Flux V2 reconciliation in a GitOps approach.
Helm Chart 0.55.0
v16.2.0 (2023-07-21)
Helm Chart 0.56.0
v16.3.0 (2023-08-20)