Update actions/checkout digest to 631c7dc (#1908)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -101,7 +101,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@8edcb1bdb4e267140fa742c62e395cd74f332709
+        uses: actions/checkout@631c7dc4f80f88219c5ee78fee08c6b62fac8da1
         with:
           clean: 'false'
           fetch-depth: '0'