Use Python3.12 in setup GitHub Action

Author: m-bull

.github/actions/setup/action.yml

@@ -13,9 +13,9 @@ inputs:
 runs:
   using: composite
   steps:
-    - uses: actions/setup-python@v5
+    - uses: actions/setup-python@v6
       with:
-        python-version: 3.11.x
+        python-version: '3.12'
         # Cache Python dependencies
         cache: pip