message: fix zulip-send path
diff: @@ -130,6 +130,6 @@ jobs:
  ZULIP_BOT_EMAIL: ${{ secrets.ZULIP_BOT_EMAIL }}
  ZULIP_API_TOKEN: ${{ secrets.ZULIP_API_TOKEN }}
  run: |
  - zulip-send --stream miri --subject "Cron Job Failure" \
  + ~/.local/bin/zulip-send --stream miri --subject "Cron Job Failure" \
  --message '@**RalfJ** @**oli** the Miri cron job build failed. Please investigate!' \
  --user $ZULIP_BOT_EMAIL --api-key $ZULIP_API_TOKEN
  