```
pkg/vm/stackitem/json_test.go:11 gofmt File is
not `gofmt`-ed with `-s` `-r 'interface{} -> any'`
pkg/core/native/native_test/cryptolib_test.go:471 gofmt File is
not `gofmt`-ed with `-s` `-r 'interface{} -> any'`
pkg/rpcclient/nns/contract_test.go:585 gofmt File is
not `gofmt`-ed with `-s` `-r 'interface{} -> any'`
```
Signed-off-by: Ekaterina Pavlova <ekt@morphbits.io>
Everywhere including examples, external interop APIs, bindings generators
code and in other valuable places. A couple of `interface{}` usages are
intentionally left in the CHANGELOG.md, documentation and tests.