cardano-testnet | Increase socket listen timeout when starting nodes

[carbolymer]

Description

Sometimes on slower machines (looking at you, Hydra), the testnet nodes do not start in time resulting in an error:

Cardano node process did not start: Socket /private/tmp/tmp.xAGs9hpemN/ledger-events-sanity-check-test-31b84f6a30199436/./socket/pool3/sock was not created after 30 seconds. There was no output on stderr. Exception: Network.Socket.connect: <socket: 51>: does not exist (No such file or directory)

This changes gives nodes more time to open the socket.

Checklist

• Commit sequence broadly makes sense and commits have useful messages
• New tests are added if needed and existing tests are updated. These may include:
  • golden tests
  • property tests
  • roundtrip tests
  • integration tests
    See Runnings tests for more details
• Any changes are noted in the CHANGELOG.md for affected package
• The version bounds in .cabal files are updated
• CI passes. See note on CI. The following CI checks are required:
  • Code is linted with hlint. See .github/workflows/check-hlint.yml to get the hlint version
  • Code is formatted with stylish-haskell. See .github/workflows/stylish-haskell.yml to get the stylish-haskell version
  • Code builds on Linux, MacOS and Windows for ghc-8.10.7 and ghc-9.2.7
• Self-reviewed the diff

Note on CI

If your PR is from a fork, the necessary CI jobs won't trigger automatically for security reasons.
You will need to get someone with write privileges. Please contact IOG node developers to do this
for you.

[carbolymer]

superceded by #5944