Bump actions/setup-python from 5 to 6 in /.github/workflows (#13660)

* Bump actions/setup-python from 5 to 6 in /.github/workflows

Bumps [actions/setup-python](https://github.com/actions/setup-python) from 5 to 6.
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v5...v6)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Auto-format by https://ultralytics.com/actions

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: UltralyticsAssistant <[email protected]>
Co-authored-by: Glenn Jocher <[email protected]>

Author: 3 people

.github/workflows/ci-testing.yml

@@ -27,7 +27,7 @@ jobs:
         model: [yolov5n]
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - uses: astral-sh/setup-uv@v6
@@ -65,7 +65,7 @@ jobs:
             torch: "1.8.0" # min torch version CI https://pypi.org/project/torchvision/
     steps:
       - uses: actions/checkout@v5
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - uses: astral-sh/setup-uv@v6

.github/workflows/merge-main-into-prs.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v5
         with:
           fetch-depth: 0
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.x"
           cache: "pip"