[build-tools] Replace `ping` with `nc` for Android network readiness check (#3453)

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# Why

`ping` is blocked on Linux VMs. https://expo.dev/accounts/layerztec/projects/layerzwallet/workflows/019cb835-cf4a-7b9f-af32-db474797eb85

# How

Replaced `ping` check with `nc`.

# Test Plan

Tested manually on staging that it works. https://staging.expo.dev/accounts/expo-services/projects/workflows-testing/workflows/019cb862-4ea6-7966-9148-5cb8dbfb1724