Updated cron script location to match where the dockerfile puts it

[rstrange-scottlogic]

The cron job script location needs to match the location the dockerfile adds the files to, referenced here:

https://github.com/ECMWFCode4Earth/vAirify/blob/main/air-quality-backend/Dockerfile.forecast https://github.com/ECMWFCode4Earth/vAirify/blob/main/air-quality-backend/Dockerfile.insitu

[github-actions[bot]]

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updated for commit: 7da46bf by action🐍