generate-aws-interfaces.sh imports the wrong module in the generated interfaces

[cPu1]

As a result of this, make generate-all is failing with this error:

/__w/eksctl-ci/eksctl-ci/eksctl/pkg/eks/services_v2.go:53:9: cannot use s.sts (variable of type *"github.com/aws/aws-sdk-go-v2/service/sts".Client) as "github.com/weaveworks/eksctl/pkg/awsapi".STS value in return statement: *"github.com/aws/aws-sdk-go-v2/service/sts".Client does not implement "github.com/weaveworks/eksctl/pkg/awsapi".STS (wrong type for method Options)
		have Options() "github.com/aws/aws-sdk-go-v2/service/sts".Options
		want Options() "google.golang.org/grpc/credentials/sts".Options
Writing `FakeKubeProvider` to `fakes/fake_kube_provider.go`... pkg/eks/api.go:59: running "counterfeiter": exit status 1
make: *** [Makefile:149: generate-always] Error 1