Bump prefect from 2.17.1 to 2.19.6

Bumps [prefect](https://github.com/PrefectHQ/prefect) from 2.17.1 to 2.19.6.
- [Release notes](https://github.com/PrefectHQ/prefect/releases)
- [Changelog](https://github.com/PrefectHQ/prefect/blob/2.19.6/RELEASE-NOTES.md)
- [Commits](PrefectHQ/prefect@2.17.1...2.19.6)

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

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

requirements.txt

@@ -86,7 +86,7 @@ pillow==10.3.0
 platformdirs==4.2.0
 pluggy==1.4.0
 pre-commit==3.7.0
-prefect==2.17.1
+prefect==2.19.6
 py==1.11.0
 pyarrow==16.1.0
 pyasn1==0.6.0