Update actions/checkout digest to 44c2b7a

Author: renovate[bot]

.github/workflows/tests.yml

@@ -13,7 +13,7 @@ jobs:
         os: [macos-10.15, macos-11, macos-12]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4
+      - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4
       - name: Install dependencies
         run: |
           python3 --version