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

Author: renovate[bot]

.github/workflows/check-codebase.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup node
         uses: actions/setup-node@v1
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup node
         uses: actions/setup-node@v1
@@ -76,7 +76,7 @@ jobs:
         node: [20, 22]
     steps:
       - name: Check out repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup node
         uses: actions/setup-node@v1