Bump actions/setup-python from 5 to 6 (#7)

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

Author: dependabot[bot]

.github/workflows/ci-cd.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: 3.14
           cache: 'pip'