Bump cupertino_icons from 1.0.5 to 1.0.6

Bumps [cupertino_icons](https://github.com/flutter/packages/tree/main/third_party/packages) from 1.0.5 to 1.0.6.
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/cupertino_icons-v1.0.6/third_party/packages)

---
updated-dependencies:
- dependency-name: cupertino_icons
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>