fix - correct checkout versions (#2029)

minor fix - bump some checkout@v3 to checkout@v4 to match and clean up warnings

Signed-off-by: Dave Lee <dave@gray101.com>

.github/workflows/dependabot_auto.yml

@@ -20,7 +20,7 @@ jobs:
           skip-commit-verification: true
 
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Approve a PR if not already approved
         run: |

.github/workflows/localaibot_automerge.yml

@@ -13,7 +13,7 @@ jobs:
     if: ${{ github.actor == 'localai-bot' }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Approve a PR if not already approved
         run: |