chore(deps): pin docker.io/rancher/system-upgrade-controller docker tag to 3cdbfdd

[renovate]

This PR contains the following updates:

Package	Update	Change
docker.io/rancher/system-upgrade-controller	pinDigest	-> 3cdbfdd

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[github-actions]

--- kubernetes/apps/system-upgrade/system-upgrade-controller/app Kustomization: flux-system/system-upgrade-controller ConfigMap: system-upgrade/system-upgrade-controller-configmap

+++ kubernetes/apps/system-upgrade/system-upgrade-controller/app Kustomization: flux-system/system-upgrade-controller ConfigMap: system-upgrade/system-upgrade-controller-configmap

@@ -8,13 +8,13 @@

       system-upgrade-controller:
         strategy: RollingUpdate
         containers:
           app:
             image:
               repository: docker.io/rancher/system-upgrade-controller
-              tag: v0.14.2
+              tag: v0.14.2@sha256:3cdbfdd90f814702cefb832fc4bdb09ea93865a4d06c6bafd019d1dc6a9f34c9
             env:
               SYSTEM_UPGRADE_CONTROLLER_DEBUG: false
               SYSTEM_UPGRADE_CONTROLLER_THREADS: 2
               SYSTEM_UPGRADE_JOB_ACTIVE_DEADLINE_SECONDS: 900
               SYSTEM_UPGRADE_JOB_BACKOFF_LIMIT: 99
               SYSTEM_UPGRADE_JOB_IMAGE_PULL_POLICY: IfNotPresent
`