Bump gif from 0.13.3 to 0.14.0 (#879)

Bumps [gif](https://github.com/image-rs/image-gif) from 0.13.3 to 0.14.0.
- [Changelog](https://github.com/image-rs/image-gif/blob/master/Changes.md)
- [Commits](image-rs/image-gif@v0.13.3...v0.14.0)

---
updated-dependencies:
- dependency-name: gif
  dependency-version: 0.14.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]