[BUG] v4 import issue

[boskiv]

Describe the bug
Taken an example from examples/heartbeat

1. What are you trying to do?

package main

import (
	"time"

	"go-micro.dev/v4"
	"go-micro.dev/v4/util/log"
)

func main() {
	service := micro.NewService(
		micro.Name("com.example.srv.foo"),
		micro.RegisterTTL(time.Second*30),
		micro.RegisterInterval(time.Second*15),
	)
	service.Init()

	if err := service.Run(); err != nil {
		log.Fatal(err)
	}
}

How to reproduce the bug:

➜  m-test go mod tidy
go: finding module for package go-micro.dev/v4/util/log
go: finding module for package go-micro.dev/v4
go: found go-micro.dev/v4 in go-micro.dev/v4 v4.2.1
go: found go-micro.dev/v4/util/log in go-micro.dev/v4/util/log v1.18.0
go: m-test/accounts imports
        go-micro.dev/v4/util/log: go-micro.dev/v4/util/log@v1.18.0: parsing go.mod:
        module declares its path as: github.com/micro/go-micro
                but was required as: go-micro.dev/v4/util/log

[xpunch]

The vanity URL issue has been fixed in #2296, now it works.

go get go-micro.dev/v4