feat(connector-besu): replace the invokeContract by the invokeContractV2

[jordigiam]

Is your feature request related to a problem? Please describe.
Replace the invokeContract function for the new invokeContractV2 and rename with the first one. All tests and examples should be work fine with this new function.

Describe the solution you'd like
The oldest invokeContract functionality must be replaced for the new one, the v2 must be deleted and only have v1.
The changes must be made in the connectors but also in the tests and examples so that nothing fails