swh/scrubber: fix the sentry package declaration

Related to swh/infra/sysadm-environment#5108

swh/templates/scrubber/journal-checker-deployment.yaml

@@ -101,7 +101,7 @@ spec:
         - name: SWH_SENTRY_ENVIRONMENT
           value: {{ $.Values.sentry.environment }}
         - name: SWH_MAIN_PACKAGE
-          value: swh.deposit
+          value: swh.scrubber
         - name: SWH_SENTRY_DSN
           valueFrom:
             secretKeyRef: