Update mockery version

[alex-semenyuk]

Fix issue on make mocks

internal error: package "context" without types was imported from "github.com/hyperledger/firefly-transaction-manager/pkg/fftm"
make: *** [mocks--Manager] Error 1

Explicit define version instead of latest for mockery as recommended https://vektra.github.io/mockery/latest/installation/ Also golang version is updated to 1.22.2 for mockery compatibility