Update actions/checkout action to v4.1.6 (#49)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/[email protected].3
+      - uses: actions/[email protected].6
       - uses: gradle/wrapper-validation-action@v3
       - name: Set up JDK 17
         uses: actions/setup-java@v4