fix: update images to latest tag in manifests
Updated the hardcoded image tag for system-upgrade-controller to v0.16.3.
Notes: Please move the tag on master after merging to ensure this change is included in the referenced tag.
UPDATE (2025-10-24):
Changed approach based on maintainer feedback. Instead of pinning to a specific version, updated both images to latest tag:
-
rancher/system-upgrade-controller: v0.16.3 → latest -
rancher/kubectl: v1.30.3 → latest
This ensures YOLO users following the official README installation method get current versions without requiring manual manifest updates.