chore(deps): update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/github-pages.yml

@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@2541b1294d2704b0964813337f33b291d3f8596b # tag=v3
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Setup .NET
         uses: actions/setup-dotnet@c0d4ad69d8bd405d234f1c9166d383b7a4f69ed8 # tag=v2