Automate the addition of files created by the hub's Monday morning and Wednesday evening pipelines

[bsweger]

Background

The variant nowcast hub has two schedule GitHub actions to support hub operations:

• Monday morning: generate a list of clades to model for the next round
• Wednesday evening (after round close): get a count of sequences collected by date and location (going back 31 days)

Currently, the GitHub actions add files to the repo and open a pull request that someone reviews and merges. We'd like to remove the need for a human reviewer.

Definition of done

• Files created by the Monday and Wednesday pipelines are added to the hub's main branch without a review process

(We'll have to work around the repo's branch rulesets).