Bump pyzstd from 0.15.3 to 0.15.9

Bumps [pyzstd](https://github.com/animalize/pyzstd) from 0.15.3 to 0.15.9.
- [Commits](https://github.com/animalize/pyzstd/compare/0.15.3...0.15.9)

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

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

requirements.txt

@@ -144,7 +144,7 @@ python-dateutil==2.8.2
 pytz==2021.1
 pytz-deprecation-shim==0.1.0.post0
 PyYAML==5.4.1
-pyzstd==0.15.3
+pyzstd==0.15.9
 regex==2022.9.13
 requests==2.25.1
 requests-oauthlib==1.3.0