fix for serviceAccountName on migration job (#10258)

Author: ishaan-jaff

deploy/charts/litellm-helm/templates/migrations-job.yaml

@@ -16,6 +16,7 @@ spec:
         {{- toYaml . | nindent 8 }}
         {{- end }}
     spec:
+      serviceAccountName: {{ include "litellm.serviceAccountName" . }}
       containers:
         - name: prisma-migrations
           image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default (printf "main-%s" .Chart.AppVersion) }}"