Update upstream dependency to polkadot-v0.9.42

[Kailai-Wang]

This is an issue to track the update of the upstream dependency.

parachain dependency

• Update local polkadot/substrate dependencies (helper script: ./scripts/bump-code-versions.sh)
• Fix any compilation/test issues
• Optionally roll out the client/runtime update

tee-worker dependency

• Upstream PR: update integritee-pallets dependency
• Upstream PR: update integritee-node dependency
• Upstream PR: update integritee-worker dependency
• Ask integritee to update frontier and substrate-api-client dependency
• Merge upstream changes to tee-worker/

[Kailai-Wang]

⚠️ A note for node operators: ⚠️

At times, Polkadot/Kusama can be become overloaded with users. This can be observed indirectly by best and finalized block getting stuck at some number and after release v0.9.42, it can be observed as peer count being lower than what was specified (--num-in + --num-out). This happens because there is a limited number of inbound slots on publicly reachable nodes and as more and more people connect to the network, these slots can get fully occupied.

To remedy this, we have adjusted the in/out peer rations to allow nodes to consume fewer outbound slots. At the same time the number of inbound slots has been increased to allow the node to still maintain 40 connections. If the node is run behind a NAT, it won't automatically be able to accept inbound connections because those dialing attempts are being blocked. If you're experiencing issues with low peer counts/syncing stalling, consider opening the P2P port in your NAT to allow inbound connections.

We are working on adding support for hole punching that would take the extra configuration of opening a port for inbound connections out of the equation and allow nodes to seamlessly establish connections to other nodes who are behind NATs but that feature is still work in progress.

cc @niteshb3495

[github-actions]

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@litentry/parachain

[Kailai-Wang]

How hard is it to update the worker only while leaving the logic update of pallets unchanged? (pallet dependency is still needed) @BillyWooo

[Kailai-Wang]

Done via #2173