Bump _images/icons from 50ed362 to cf3540b (#3691)

Bumps [_images/icons](https://github.com/elementary/icons) from `50ed362` to `cf3540b`.
- [Release notes](https://github.com/elementary/icons/releases)
- [Commits](elementary/icons@50ed362...cf3540b)

---
updated-dependencies:
- dependency-name: _images/icons
  dependency-type: direct:production
...

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