Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/jekyll-gh-pages.yml

@@ -35,7 +35,7 @@ jobs:
           egress-policy: audit
 
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Pages
         uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5.0.0
       - name: Build with Jekyll

.github/workflows/multi-build.yaml

@@ -77,7 +77,7 @@ jobs:
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
 
       - name: Checkout
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
         # This step checks out the code from the repository.
         # It uses the actions/checkout action to clone the repository into the runner's workspace.