fix(chart): add imagePullSecrets to CronJob template

The CronJob template was missing imagePullSecrets, causing pods to fail
with ImagePullBackOff when scheduled on nodes without the image cached.
This aligns the CronJob pod spec with the Deployment template.

Fixes #1868

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: robbeverhelst

deploy/charts/distr/templates/cronjob.yaml

@@ -28,6 +28,10 @@ spec:
             {{- toYaml . | nindent 12 }}
             {{- end }}
         spec:
+          {{- with $.Values.imagePullSecrets }}
+          imagePullSecrets:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
           containers:
             - name: hub
               {{- with $job.args }}