Update actions/checkout digest to 44c2b7a

Author: renovate[bot]

.github/workflows/conftest.yaml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
+        uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4
 
       - name: Check yaml extension does not exist
         run: |