build(deps): bump png from 0.17.14 to 0.17.16

Bumps [png](https://github.com/image-rs/image-png) from 0.17.14 to 0.17.16.
- [Changelog](https://github.com/image-rs/image-png/blob/master/CHANGES.md)
- [Commits](image-rs/image-png@v0.17.14...v0.17.16)

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

Signed-off-by: dependabot[bot] <[email protected]>