Go on Draft a new release:

Type the release number with a prefixed v for the tag, like v0.15.2 and vlick on create new tag on publish.

Use the same number for the release version below.

Click on the `Generate release notes"

• I usually edit that a bit, like removing bot PRs and writing smaller titles.
• It can also be nice to separate them in sections like 'Breaking changes', 'New features', 'Improvements', 'Bug fixes', 'Documentation'.

Click on publish and wait for the GHA to submit the artifacts to PyPI. Conda-forge bots usually picks the release up automatically after ~1 hour and you don't need to do anything there.