use latest runner version

Signed-off-by: Martin Schurz <[email protected]>

.github/workflows/os_hardening.yml

@@ -26,7 +26,7 @@ concurrency:
 
 jobs:
   build:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     env:
       PY_COLORS: 1
       ANSIBLE_FORCE_COLOR: 1
@@ -54,10 +54,10 @@ jobs:
           path: ansible_collections/devsec/hardening
           submodules: true
 
-      - name: Set up Python 3.7
+      - name: Set up Python 3.11
         uses: actions/setup-python@v4
         with:
-          python-version: 3.7
+          python-version: 3.11
 
       - name: Install dependencies
         run: |