Simplify Bandit workflow by removing setup steps

Removed unnecessary steps for checking out the repository and setting up Python in the Bandit workflow.

Author: kernelsam

.github/workflows/bandit.yaml

@@ -19,16 +19,6 @@ jobs:
         python-version: ["3.12"]
 
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v5
-        with:
-          persist-credentials: false
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ matrix.python-version }}
-
       - name: Run Bandit Scan
         uses: PyCQA/bandit-action@v1
         with: