[Repo Assist] fix(tooling): update isort py_version from 38 to 39

[github-actions]

🤖 This PR was created by Repo Assist, an automated AI assistant.

Summary

The [tool.isort] section in pyproject.toml had py_version = 38, but the project's minimum supported Python version is 3.9 (set via python = ">=3.9,<3.14" in [tool.poetry.dependencies] and target-version = ['py39', ...] in [tool.black]).

Change

-py_version = 38
+py_version = 39

Why this matters

isort uses py_version to decide whether certain Python 3.9+ syntax (e.g., from __future__ import annotations behaviour) applies. Keeping it at 38 could silently produce sub-optimal import ordering for 3.9-specific constructs, and creates a mismatch with the rest of the toolchain configuration.

Test Status

• ✅ isort --check . passes with py_version = 39
• ⬜ CI will verify that no import reordering occurs on existing files (expected: no changes)

This is a one-line tooling fix with no impact on library functionality.

---

Warning

Protected Files

This was originally intended as a pull request, but the patch modifies protected files. These files may affect project dependencies, CI/CD pipelines, or agent behaviour. Please review the changes carefully before creating the pull request.

Click here to create the pull request once you have reviewed the changes

Protected files

• pyproject.toml

To route changes like this to a review issue instead of blocking, configure protected-files: fallback-to-issue in your workflow configuration.

Generated by 🌈 Repo Assist, see workflow run. Learn more.

To install this agentic workflow, run

gh aw add githubnext/agentics/workflows/repo-assist.md@11c9a2c442e519ff2b427bf58679f5a525353f76