bump version to 1.3.9

[digaobarbosa]

Description

Bumps the package version from 1.3.8 to 1.3.9.

Changes since 1.3.8

New features

• Universe project fork CLI (Add Universe project fork CLI #473) — Adds SDK and CLI support for asynchronously forking public Universe projects into a workspace. New commands: roboflow project fork, roboflow asynctasks get, roboflow asynctasks wait. Includes new SDK methods for project fork/task status, a shared polling helper, docs, and tests.
• Project dataset health check (Add project dataset health check #472) — Exposes the dataset health check seen in the UI to the SDK and CLI. New command: roboflow project health [-r] <project_slug> (-r to regenerate).
• Shell autocompletion install command (autocompletion install for shells #471) — Adds a command that installs shell autocompletion automatically (instead of requiring users to copy the script into place manually) and prints a hint about it after login.

Internal

• Refactor: dataset health now uses rfapi, with reordering inside rfapi for consistency (part of Add project dataset health check #472).

Type of change

• Chore (version bump)

How has this change been tested?

• All underlying changes were tested and merged independently in their respective PRs.
• python -m unittest

Will the change affect Universe?

No.

Any specific deployment considerations

Standard PyPI release once merged.

Docs

• No docs change required for the bump itself; per-feature docs were updated in their respective PRs.