fix: process resource cleanup in start task

[kratico]

Based on trial and error, it seems that sometimes zombienet Deno resources are not properly released.
I haven't been able to identify the root cause.
The unload event is not fired in these cases.

self.addEventListener("unload", () => Deno.exit(status.code))

This PR

• closes child processes started with Deno.run
• closes child processes piped file descriptors
• upgrades polkadot, polkadot-parachain and zombienet versions

Note: I've observed that the star task sometimes keeps running even after closing fd and processes

Another theory to explore is that this could be correlated to a recent Deno version upgrade.

This is related to #625

[kratico]

zombienet handles SIGINT

https://github.com/paritytech/zombienet/blob/8b421410d803177abe866457443c601dc8b25aae/javascript/packages/cli/src/cli.ts#L298

[harrysolovay]

LGTM

[harrysolovay]

Let's actually hold off on merging this, as we will likely want to capture dev process std out for signaling boot progress #649

[kratico]

Let's actually hold off on merging this, as we will likely want to capture dev process std out for signaling boot progress #649

@harrysolovay
Do you mean something like await copy(process.stderr, Deno.stderr) for the PolkadotDevProvider?

Would it be for boot progress or error debugging?

[harrysolovay]

Both. I suppose we can tackle that in a subsequent PR. This looks good.