fix(ci): lower Kaniko resource requests to fit the large pool

Requested cpu:2/mem:4Gi was sized for the removed dedicated ci-compile-cpu
pool; the shared large nodes (3800m, ~1.3-1.6 CPU free) couldn't schedule it
(Insufficient cpu, autoscaler didn't add nodes). cpu:1/mem:3Gi request
(limit 3/10Gi) fits and still builds fine (Kaniko is I/O-bound here).

infra/argo/fxhnt-cockpit-workflowtemplate.yaml

@@ -134,7 +134,7 @@ spec:
               --snapshot-mode=redo
         env:
           - { name: DOCKER_CONFIG, value: /kaniko/.docker }
-        resources: { requests: { cpu: "2", memory: 4Gi }, limits: { cpu: "6", memory: 12Gi } }
+        resources: { requests: { cpu: "1", memory: 3Gi }, limits: { cpu: "3", memory: 10Gi } }
         volumeMounts:
           - { name: registry-auth, mountPath: /kaniko/.docker, readOnly: true }
           - { name: workspace, mountPath: /workspace }