go.mod should be updated to v4

[WKBae]

Describe the bug
As the major version tag is bumped to v4, module path in go.mod should be updated to v4.

go-lokalise-api/go.mod

Line 1 in 502c2e3

module github.com/lokalise/go-lokalise-api/v3

When trying to upgrade with go get:

$ go get github.com/lokalise/[email protected]
go: github.com/lokalise/[email protected]: invalid version: go.mod has post-v4 module path "github.com/lokalise/go-lokalise-api/v3" at revision v4.0.0

When manually set require as github.com/lokalise/go-lokalise-api/v3 v4.0.0 in my(importing) go.mod:

$ go get
go: errors parsing go.mod:
/.../my-project/go.mod:14:2: require github.com/lokalise/go-lokalise-api/v3: version "v4.0.0" invalid: should be v3, not v4

When set github.com/lokalise/go-lokalise-api/v4 v4.0.0:

$ go get              
go: github.com/lokalise/go-lokalise-api/[email protected]: go.mod has non-.../v4 module path "github.com/lokalise/go-lokalise-api/v3" (and .../v4/go.mod does not exist) at revision v4.0.0

Setting up from new, empty project:

$ go get github.com/lokalise/go-lokalise-api
go: github.com/lokalise/go-lokalise-api: no matching versions for query "upgrade"

To Reproduce
Try upgrading to v4 in existing project, or install newly:

mkdir temp && cd temp
go mod init temp
go get github.com/lokalise/go-lokalise-api

Expected behavior
It should upgrade to v4 well.

Your environment:
darwin/arm64 go1.19.5 and go1.21.3

Additional context