chore(deps): update actions/setup-python action to v6 (#7)

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This PR contains the following updates:

| Package | Type | Update | Change | OpenSSF |
|---|---|---|---|---|
|
[actions/setup-python](https://redirect.github.com/actions/setup-python)
| action | major | `v5` -> `v6` | [![OpenSSF
Scorecard](https://api.securityscorecards.dev/projects/github.com/actions/setup-python/badge)](https://securityscorecards.dev/viewer/?uri=github.com/actions/setup-python)
|

---

### Release Notes

<details>
<summary>actions/setup-python (actions/setup-python)</summary>

###
[`v6`](https://redirect.github.com/actions/setup-python/compare/v5...v6)

[Compare
Source](https://redirect.github.com/actions/setup-python/compare/v5...v6)

</details>

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.github/workflows/qa.yml

@@ -158,7 +158,7 @@ jobs:
 
       - name: Set up Python
         if: github.event_name == 'pull_request' || github.event_name == 'push'
-        uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+        uses: actions/setup-python@e797f83bcb11b83ae66e0230d6156d7c80228e7c # v6
         with:
           python-version: "3.13.7"
           check-latest: true