Updated checkout action [skip ci]

Author: ankane

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
       matrix:
         java: [25, 21, 17, 11, 8]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           java-version: ${{ matrix.java }}