Synchronize ci with module template (August 2023)

[legobeat]

• Was previously part of Synchronise package with module template (July 2023) #98 which was reverted in Revert "Synchronise package with module template (July 2023) (#98)" #103
  • Isolated to changes under .github
  • Excluding separation of builds for sources/types since this depends on package changes
  • Other parts of Synchronise package with module template (July 2023) #98 have been submitted as separate open or already merged PRs in this repo

[mcmire]

Looks good aside from one thing.