Address `npm install` warnings and recommnedations

[AlfredoG87]

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Problem

When doing a fresh npm install after cloning the project the process highlights some WARNINGS and recommendations that the mainteners of the relay should address in a timely manner. and before this becomes an issue:

Currently there are some messages that should be reviewed and addressed.

Solution

Address the following:

• [ ] npm WARN deprecated [email protected]: this library is no longer supported
• [x] npm WARN deprecated [email protected]: IMPORTANT 10x+ PERFORMANCE UPGRADE: Please upgrade to v12.0.1+ as we have fixed an issue with debuglog causing 10x slower router benchmark performance, see https://github.com/koajs/router/pull/173
• [ ] npm WARN deprecated [email protected]: testrpc has been renamed to ganache-cli, please use this package from now on.
• [ ] npm WARN deprecated [email protected]: Package no longer supported. Contact Support at https://www.npmjs.com/support for more info.
• [ ] npm WARN deprecated [email protected]: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
• [ ] npm WARN deprecated [email protected]: request has been deprecated, see https://github.com/request/request/issues/3142
• [ ] npm WARN deprecated [email protected]: https://about.codecov.io/blog/codecov-uploader-deprecation-plan/
• [ ] npm WARN deprecated [email protected]: 16.1.1
• [ ] npm WARN deprecated @ensdomains/[email protected]: Please use @ensdomains/ens-contracts
• [ ] npm WARN deprecated @ensdomains/[email protected]: Please use @ensdomains/ens-contracts

Alternatives

No response

[AlfredoG87]

The second [email protected]: IMPORTANT 10x+ PERFORMANCE UPGRADE: has been addressed already on PR: https://github.com/hashgraph/hedera-json-rpc-relay/pull/2067