Bump python-snappy from 0.7.2 to 0.7.3 (apache#1115)

Bumps [python-snappy](https://github.com/intake/python-snappy) from 0.7.2 to 0.7.3.
- [Commits](https://github.com/intake/python-snappy/commits)

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

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