fix(cron): lower cpu limit for debian cve convert (#4060)

Doesn't actually use that much cpu.

Author: jess-lowe

deployment/clouddeploy/gke-workers/base/debian-cve-convert.yaml

@@ -24,11 +24,11 @@ spec:
               privileged: true
             resources:
               requests:
-                cpu: "16"
-                memory: "16G"
+                cpu: "2"
+                memory: "8G"
               limits:
-                cpu: "16"
-                memory: "16G"
+                cpu: "4"
+                memory: "12G"
           restartPolicy: Never
           volumes:
             - name: "ssd"