Updated checkout action

Author: ankane

.github/workflows/build.yml

@@ -4,7 +4,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: dart-lang/setup-dart@v1
       - uses: ankane/setup-postgres@v1
         with: