Update actions/setup-python action to v7

Signed-off-by: Mend Renovate <bot@renovateapp.com>

Author: renovate-bot

.github/actions/prepare-k8s/action.yaml

@@ -10,7 +10,7 @@ runs:
     # Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
     # yamllint (https://github.com/adrienverge/yamllint) which require Python
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: '3.14'
 

.github/workflows/lint-test.yaml

@@ -16,7 +16,7 @@ jobs:
 
       # Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
       # yamllint (https://github.com/adrienverge/yamllint) which require Python
-      - uses: actions/setup-python@v6
+      - uses: actions/setup-python@v7
         with:
           python-version: '3.14'