Update actions/checkout digest to 0ad4b8f

Author: renovate[bot]

.github/workflows/up.yml

@@ -13,7 +13,7 @@ jobs:
   up:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4
+      - uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4
       - run: |-
           git fetch --tags --force && \
           latest=$(git tag --sort=creatordate | tail -1) && \