Merge the jsonrpc4j fix for the issue with Spring Boot v3.x

[nistanimirov]

1. Task description
   This problem dates back to jsonrpc4j to support Spring Boot v3.x #28 at which point no solution was available.
   However, in the original issue here, it can be seen (as a most recent activity at the time of writing this), that a PR has been opened to propose a fix in the original repo. Since the original is not being actively maintained, there's a fork which merges this PR.
   Investigate how this fix is applicable in our fork.

2. Motivation
   This is very significant since this dependency on jsonrpc4j is the reason we can't upgrade our Spring version, which in turn is the reason we're stuck on Java 17. Resolving this issue will untie our hands and help Fruzhin be updatable, hence not legacy 😄