ci(github-action)!: Update actions/setup-python action (v5 → v6)

| datasource  | package              | from | to |
| ----------- | -------------------- | ---- | -- |
| github-tags | actions/setup-python | v5   | v6 |

Author: erhardt-consulting-bot

.github/workflows/test.yaml

@@ -14,7 +14,7 @@ jobs:
       uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
     - name: Set up Python 3.11
-      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
+      uses: actions/setup-python@83679a892e2d95755f2dac6acb0bfd1e9ac5d548 # v6
       with:
         python-version: '3.14'