Bump _images/icons from 6b7b879 to b2ffde0 (#3314)

Bumps [_images/icons](https://github.com/elementary/icons) from `6b7b879` to `b2ffde0`.
- [Release notes](https://github.com/elementary/icons/releases)
- [Commits](elementary/icons@6b7b879...b2ffde0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>