chore(deps): bump @libp2p/mdns from 11.0.47 to 12.0.0 #296

Job	Run time
Test monorepo	4m 41s
Test js-libp2p-example-circuit-relay	3m 51s
Test js-libp2p-example-discovery-mechanisms	6h 0m 15s
Test js-libp2p-example-delegated-routing	2m 47s
Test js-libp2p-example-custom-protocols	1m 49s
Test js-libp2p-example-peer-and-content-routing	3m 18s
Test js-libp2p-example-protocol-and-stream-muxing	3m 20s
Test js-libp2p-example-pnet	3m 15s
Test js-libp2p-example-browser-pubsub	3m 52s
Test js-libp2p-example-pubsub	2m 15s
Test js-libp2p-example-transports	2m 54s
Test js-libp2p-example-chat	5m 23s
Test js-libp2p-example-auto-tls	3m 19s
Test js-libp2p-example-webrtc-private-to-private	2m 19s
Test js-libp2p-example-connection-encryption	2m 41s
Push changes	0s
	6h 45m 59s

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