Bump liip/imagine-bundle from 2.11.0 to 2.12.0

Bumps [liip/imagine-bundle](https://github.com/liip/LiipImagineBundle) from 2.11.0 to 2.12.0.
- [Release notes](https://github.com/liip/LiipImagineBundle/releases)
- [Changelog](https://github.com/liip/LiipImagineBundle/blob/2.x/CHANGELOG.md)
- [Commits](liip/LiipImagineBundle@2.11.0...2.12.0)

---
updated-dependencies:
- dependency-name: liip/imagine-bundle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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