Build and deploy from the devel branch once a week, preferably at the start of the week

[oraNod]

Follows on from #2047

The workflow to build the package docs should run once a week and deploy the devel branch of this repository to the devel of the package-doc-builds repository.

[ansible-documentation-bot]

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[x1101]

After discussion in the most recent DaWGs meeting, I'm going to take a look at this. Please assign to me.