Update libp2p to 0.30.x

[wemeetagain]

Having trouble committing on top of #1820
Updates libp2p dependencies to latest versions & updates yarn.lock

[codeclimate]

Code Climate has analyzed commit 7a076d9 and detected 0 issues on this pull request.

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[dapplion]

Sim test consistently fail, I've seen this in the logs

2021-01-26 18:48:10 [NETWORK]          warn: Cannot connect to peers on subnet subnet=[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63], error=Cannot read property 'discv5' of undefined

2021-01-26 18:46:51 [VALIDATOR 0-8]   error: Failed to get validator details message=Validator not found
Error: Validator not found
    at BeaconStateApi.getStateValidator (/home/runner/work/lodestar/lodestar/packages/lodestar/src/api/impl/beacon/state/state.ts:89:13)
    at processTicksAndRejections (internal/process/task_queues.js:94:5)
    at runNextTicks (internal/process/task_queues.js:63:3)
    at listOnTimeout (internal/timers.js:501:9)
    at processTimers (internal/timers.js:475:7)
    at AttestationService.updateValidators (/home/runner/work/lodestar/lodestar/packages/lodestar-validator/src/services/attestation.ts:407:36)
    at ApiClientOverInstance.<anonymous> (/home/runner/work/lodestar/lodestar/packages/lodestar-validator/src/services/attestation.ts:107:5)

2021-01-26 18:46:57 [NETWORK]          warn: Ignoring gossip attestation attestationSlot=11, attestationBlockRoot=0x20ea10f2babb32cc90bf7f283a056ed21bfedc1d6c97d5862d722b86554d9b64, attestationRoot=0x38c2c92a312004162ebc64c504349becb9a9b0412f0406a243d36bdd99e28acf, subnet=3 code=ATTESTATION_ERROR_UNKNOWN_BEACON_BLOCK_ROOT, beaconBlockRoot=0x20ea10f2babb32cc90bf7f283a056ed21bfedc1d6c97d5862d722b86554d9b64
Error: ATTESTATION_ERROR_UNKNOWN_BEACON_BLOCK_ROOT
    at Object.validateGossipAttestation (/home/runner/work/lodestar/lodestar/packages/lodestar/src/chain/validation/attestation.ts:73:11)
    at GossipMessageValidator.isValidIncomingCommitteeAttestation (/home/runner/work/lodestar/lodestar/packages/lodestar/src/network/gossip/validator.ts:113:7)
    at LodestarGossipsub.libP2pTopicValidator (/home/runner/work/lodestar/lodestar/packages/lodestar/src/network/gossip/gossipsub.ts:113:32)
    at LodestarGossipsub.validate (/home/runner/work/lodestar/lodestar/node_modules/libp2p-interfaces/src/pubsub/index.js:594:7)

Not sure if any of these are related to the PR

[wemeetagain]

Sim test consistently fail, I've seen this in the logs

2021-01-26 18:48:10 [NETWORK]          warn: Cannot connect to peers on subnet subnet=[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63], error=Cannot read property 'discv5' of undefined

It seems like this is unique to this PR. It looks like the node is not able to stop properly (but just in the threaded sim test)

[wemeetagain]

The simulation test was failing due to libp2p/js-libp2p-tcp#139 which has been resolved and re-released.

This PR is ready for re-review :)

[3xtr4t3rr3str14l]

everything else in the PR looks good to me, but i'm curious, what is the effect of stopping these tasks here instead of where it used to be? What motivated this particular change?

[wemeetagain]

These tasks are for searching for peers and pinging peers. Before, we were shutting these down after we shut down libp2p, and no longer had any peers. So there was a slight change that tasks could error or not shut down cleanly.

This was usually not even visible or a practical issue, since these tasks run on long intervals, and would shut down before having a chance to run after libp2p had been shut down. During debugging this PR, this little wrinkle became apparent tho.