CI: automated weekly releases

[qkaiser]

I would like to have weekly releases of unblob fully automated through Github CI.

The auto version update workflow would:

• pull the code
• set the calendar version in pyproject.yml
• commit the change
• tag the commit with version
• push the branch
• open a pull request

When that automated PR gets approved by a maintainer, auto-release workflow would pick it up and create a release:

https://github.com/marketplace/actions/auto-release

This would then trigger our release workflow with publication to PyPi.

[martonilles]

do we need weekly release? Isn't it too frequent?

[qkaiser]

do we need weekly release? Isn't it too frequent?

can be bi-weekly or monthly, just want it to be automated like our dependencies update :)