Fix failed test: test mixed gossipsub

[twoeths]

This test sometimes failed, even in local environment:

1) go-libp2p-pubsub gossipsub tests
       test mixed gossipsub:
     Error: Message never received, sender 6, receiver 19, index 67
      at Timeout._onTimeout (file:///Users/tuyennguyen/Projects/workshop/gossipsub-js/dist/test/e2e/go-gossipsub.spec.js:28:16)
      at listOnTimeout (node:internal/timers:557:17)
      at processTimers (node:internal/timers:500:7)



Command failed with exit code 1: mocha ./dist/test/e2e/*.spec.js --ui bdd --require source-map-support/register --timeout=60000

[stale]

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