Fix nightly release workflow

[desertaxle]

Fixes issues with release notes generation by using the functionality build into the create release action. Also uses a custom PAT to ensure the downstream workflows start when the release is created.

Example

Checklist

• This pull request includes a label categorizing the change e.g. maintenance, fix, feature, enhancement, docs.
• This pull request references any related issue by including "closes <link to issue>"
  • If no issue exists and your change is not a small fix, please create an issue first.
• If this pull request adds new functionality, it includes unit tests that cover the changes
• If this pull request removes docs files, it includes redirect settings in mint.json.
• If this pull request adds functions or classes, it includes helpful docstrings.

[chrisguidry]

Sounds great to me!