fix: updating release draft status from true to false

[galargh]

Hi! Thanks for creating this action 😊

One issue I've encountered is that it's currently impossible to use the action to publish a draft issue.

In this PR, I'm trying to address this issue by changing how existingRelease is being looked for from agetReleaseByTag call to iterating through allReleases. Previously, we were only iterating through allReleases if the desired state of the release was draft.

I'd suggest reviewing with whitespace changes hidden: https://github.com/softprops/action-gh-release/pull/316/files?diff=split&w=1

Testing

• used the updated action to publish draft release here: https://github.com/protocol/.github-test-target/actions/runs/4068545498