chore(flux): update image docker.io/rancher/system-upgrade-controller v0.14.1 → v0.14.2 (clustertool) (#31778)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/rancher/system-upgrade-controller | patch | `v0.14.1` ->
`v0.14.2` |

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clustertool/embed/generic/kubernetes/system/system-upgrade-controller/app/helm-release.yaml

@@ -31,7 +31,7 @@ spec:
           app:
             image:
               repository: docker.io/rancher/system-upgrade-controller
-              tag: v0.14.1@sha256:7e13a9b2b984f0c0fd6328439b575348723cc6954b91db3453057fcb784e2d29
+              tag: v0.14.2@sha256:3cdbfdd90f814702cefb832fc4bdb09ea93865a4d06c6bafd019d1dc6a9f34c9
             env:
               SYSTEM_UPGRADE_CONTROLLER_DEBUG: false
               SYSTEM_UPGRADE_CONTROLLER_THREADS: 2