Bump polling from 3.6.0 to 3.7.0 (#926)

Bumps [polling](https://github.com/smol-rs/polling) from 3.6.0 to 3.7.0.
- [Release notes](https://github.com/smol-rs/polling/releases)
- [Changelog](https://github.com/smol-rs/polling/blob/master/CHANGELOG.md)
- [Commits](smol-rs/polling@v3.6.0...v3.7.0)

---
updated-dependencies:
- dependency-name: polling
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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