Update ci.yml

Author: Mcouedel

.github/workflows/ci.yml

@@ -5,7 +5,7 @@ jobs:
     name: Build Jekyll
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Build the site in the jekyll/builder container
         run: |
           export JEKYLL_VERSION=3.8