Fix local_chain test, timeout issues

[gabrielfior]

Ref -> https://github.com/gnosis/prediction-market-agent-tooling/actions/runs/9905611350/job/27365498526?pr=302

Increasing timeout didn't help much - investigate issue, consider alternative solutions.

[gabrielfior]

Errors arise due to RPC problems, see logs https://github.com/gnosis/prediction-market-agent-tooling/actions/runs/10469875908/job/28993818419?pr=350#step:8:40

Solution here is to use a different RPC (only for testing), not to overcomplicate things with ape which adds more dependencies/config files, etc.