Update merge-pr-sentry-release.yml

[jywarren]

Fixes #0000 (<=== Add issue number here)

Make sure these boxes are checked before your pull request (PR) is ready to be reviewed and merged. Thanks!

• [ ] PR is descriptively titled 📑 and links the original issue above 🔗
• [ ] tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR -- or run tests locally with rake test
• [ ] code is in uniquely-named feature branch and has no merge conflicts 📁
• [ ] screenshots/GIFs are attached 📎 in case of UI updation
• [ ] ask @publiclab/mapknitter-reviewers for help, in a comment below

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Thanks!

[gitpod-io[bot]]