GitHub Action: Bump actions/setup-python

Bumps the all-actions-dependencies group with 1 update in the / directory: [actions/setup-python](https://github.com/actions/setup-python).


Updates `actions/setup-python` from 6 to 7
- [Release notes](https://github.com/actions/setup-python/releases)
- [Commits](actions/setup-python@v6...v7)

---
updated-dependencies:
- dependency-name: actions/setup-python
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all-actions-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/prepare-binaries.yml

@@ -44,7 +44,7 @@ jobs:
         owner: ${{ github.repository_owner }}
 
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: 3.12
         cache: 'pip'

.github/workflows/validate-kek-updates.yml

@@ -29,7 +29,7 @@ jobs:
         fetch-depth: 0  # Need full history to compare with base branch
 
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: 3.12
         cache: 'pip'