Deprecate Old Version of Cronos zkEVM chain

[aw126]

@ligi, there's a new iteration of Cronos zkEVM testnet and the official chainId has changed from 282 to 240.

This PR is deprecating the older version of testnet. I will create another PR to add a new chainId.

[github-actions]

You successfully submitted a PR! Due to the amount of PRs coming in: we will only look at PRs that the CI is happy with. We can also not hold your hand getting the CI green - just look how others that where merged did it and RTFM. So as long as there is any CI check that reports an error - no human will look at this. You might be able to ask for some support after supporting the project - e.g. by sending funds to lists.eth. When you fixed things after a requested change - then you also need to (re-)request a review.

[ElvisKrop]

Hey @aw126 👋
Please update the rpc endpoints in this PR to the deprecated. Build fails because of this issue:

Exception in thread "main" java.lang.IllegalStateException: RPC chainId (240) does not match chainId from json (282)

In addition, please update the chain and shortname with the prefix "deprecated". This will enable the automated checks to be successful at #6053

[aw126]

update the chain and shortname with the prefix "deprecated"

@ElvisKrop Thanks for the suggestions! The automated checks have passed 👍

[github-actions]

PR merged - please consider contributing some funds to lists.eth