chore(ci): bump `actions/setup-python` to v5, set version to 3.12; fix CODEOWNERS (#11726)

* chore(ci): bump actions/setup-python to v5, set version to 3.12

* test: specify workflow directory in CODEOWNERS

.github/CODEOWNERS

@@ -16,7 +16,7 @@
 /pages/linux/ @sbrl
 
 /*.md @sbrl @kbdharun
-/.github/* @sbrl @kbdharun @sebastiaanspeck
+/.github/workflows/* @sbrl @kbdharun @sebastiaanspeck
 /scripts/* @sebastiaanspeck
 
 /contributing-guides/maintainers-guide.md @sbrl @kbdharun

.github/workflows/ci.yml

@@ -16,9 +16,9 @@ jobs:
       with:
         fetch-depth: 0
 
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
-        python-version: '3.10'
+        python-version: '3.12'
         cache: 'pip'
 
     - uses: actions/setup-node@v4