chore: clang-format.fix.ps1 script: Add .venv to list of path exclusions (#1515)

## Summary

* **What is the goal of this PR?** Dont format files in .venv directory
* **What changes are included?**

## Additional Context

* Add any other information that might be helpful for the reviewer
(e.g., performance implications, potential risks,
specific areas to focus on).

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