Add more check for PR's merged during release

[MarekMichali]

Description

This checks if a PR has been merged after the first PR merge check and before the bumps are merged. This checks also if a PR has been merged after the second PR merge check and before the draft release and tag are created. This covers the corner case scenario where there is about a ~1 s window in the whole release where we could merge a PR and not detect it when needed.

Related issue(s)

[github-actions[bot]]

Add one of following labels

- kind/feature -> Use it when you want to submit a new feature

- kind/enhancement -> Use it when you modify or improve an existing feature

- kind/bug -> Use it when you fix a bug

[MarekMichali]

/kind enhancement