Update actions/checkout action to v6 (#1522)

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

.github/workflows/build_check.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Clone repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up JDK
         uses: actions/setup-java@v5

.github/workflows/build_push.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Clone repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Android SDK
         run: |

.github/workflows/build_push_preview.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Clone repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up JDK
         uses: actions/setup-java@v5