Meta: update GitHub Actions

Author: domenic

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     name: Build
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 2
         path: 'source'