Update actions/checkout action to v4

.github/workflows/release.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Prepare
         id: prep

.github/workflows/test.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: earthly/actions-setup@v1.0.8
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Build