Use image version 20 for android (smaller size) (#29788)

Author: andy31415

.github/workflows/full-android.yaml

@@ -36,7 +36,7 @@ jobs:
         if: github.actor != 'restyled-io[bot]'
 
         container:
-            image: ghcr.io/project-chip/chip-build-android:1
+            image: ghcr.io/project-chip/chip-build-android:20
             volumes:
                 - "/tmp/log_output:/tmp/test_logs"
 

.github/workflows/smoketest-android.yaml

@@ -37,7 +37,7 @@ jobs:
         if: github.actor != 'restyled-io[bot]'
 
         container:
-            image: ghcr.io/project-chip/chip-build-android:1
+            image: ghcr.io/project-chip/chip-build-android:20
             volumes:
                 - "/tmp/log_output:/tmp/test_logs"