Upgrade github actions (#1792)

Author: jderusse

.github/workflows/checks.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
           coverage: none
 
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Initialize tests
         run: make initialize