ci: bump actions/checkout to v4

Author: akirakw

.github/workflows/ci-build.yml

@@ -29,7 +29,7 @@ jobs:
           mkdir ci_test
 
       - name: Checkout_Postgresql
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: ci_test
           submodules: true
@@ -55,7 +55,7 @@ jobs:
           mkdir ci_test2
 
       - name: Checkout_Json
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           path: ci_test2
           submodules: true