Update actions/checkout action to v3

.github/workflows/android.yml

@@ -7,7 +7,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
         with:
             distribution: temurin