[Announcement] Branching

[martinbeentjes]

I have cause quite some issues around repositories by changing branch names and adding jq.

Both branches master and main now exist for a period before I completely switch to main.

[connorlurring]

@martinbeentjes to inform people to switch over, the warning method from https://github.com/actions/toolkit/tree/main/packages/core#annotations could be added to the master branch to surface a message informing the users to switch the referenced branch to main. This should help prevent a repeat of the previous change over, where builds started failing with no prior warning.

Additionally, the documentation could be changed to suggest using a pinned version via a tag rather than a branch as the @ reference. This would also mean that any changes in the future that are not backwards compatible would not break pipelines.

Edit: Saw that you mentioned tagging versions and putting that in the readme in your blog post. The post was a good read, thanks for putting it together!