Update Build_Examples.yml actions/checkout to v4

.github/workflows/Build_Examples.yml

@@ -49,7 +49,7 @@ jobs:
 
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           # Update the submodules below, doing so here will convert ssh to https
           submodules: false