ci(releases): constrain PyPI GitHub Actions release trigger types

[d33bs]

Description

This PR seeks to fix the GitHub Actions errors which followed a recent release. There are many different trigger types for releases, I believe we saw the job triggered from several of the types (see here for more: https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#release ).

Closes #456

What is the nature of your change?

• [x] Bug fix (fixes an issue).
• [ ] Enhancement (adds functionality).
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected).
• [ ] This change requires a documentation update.

Checklist

Please ensure that all boxes are checked before indicating that a pull request is ready for review.

• [x] I have read the CONTRIBUTING.md guidelines.
• [x] My code follows the style guidelines of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [ ] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [x] New and existing unit tests pass locally with my changes.
• [ ] I have added tests that prove my fix is effective or that my feature works.
• [x] I have deleted all non-relevant text in this pull request template.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.74%. Comparing base (98da73f) to head (1680704). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #458 +/- ## ======================================= Coverage 94.74% 94.74% ======================================= Files 57 57 Lines 3156 3156 ======================================= Hits 2990 2990 Misses 166 166 ``` | [Flag](https://app.codecov.io/gh/cytomining/pycytominer/pull/458/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cytomining) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/cytomining/pycytominer/pull/458/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cytomining) | `94.74% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=cytomining#carryforward-flags-in-the-pull-request-comment) to find out more.

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[d33bs]

Thanks @gwaybio for the review! I made a small modification based on your comment. Merging this in now.