feat(weekly-notes): allow parameterization of communityWorker

[MaxTru]

This action is now used in other teams as well:

• https://github.com/camunda/team-hto/blob/main/.github/workflows/WEEKLY.yml
• https://github.com/camunda/engineering-leadership-team/blob/main/.github/workflows/WEEKLY.yml

It would be great to make the community worker optional:

• related to camunda/engineering-leadership-team#31

[MaxTru]

Sounds good to me! @maxdanilov it seems you have the solution already well shaped in your head. Maybe you just create a follow-up PR?

[maxdanilov]

Sure, will do. Done: https://github.com/bpmn-io/actions/pull/7