Fixup golang.org/x/term staticcheck warnings

Errors from staticcheck:
cmd/preferredimports/preferredimports.go:38:2:
  package golang.org/x/crypto/ssh/terminal is deprecated:
  this package moved to golang.org/x/term.  (SA1019)
vendor/k8s.io/client-go/plugin/pkg/client/auth/exec/exec.go:36:2:
  package golang.org/x/crypto/ssh/terminal is deprecated:
  this package moved to golang.org/x/term.  (SA1019)
vendor/k8s.io/client-go/tools/clientcmd/auth_loaders.go:26:2:
  package golang.org/x/crypto/ssh/terminal is deprecated:
  this package moved to golang.org/x/term.  (SA1019)

Please review the above warnings. You can test via:
  hack/verify-staticcheck.sh <failing package>
If the above warnings do not make sense, you can exempt the line or
file. See:
  https://staticcheck.io/docs/#ignoring-problems

generated:
- hack/update-internal-modules.sh
- hack/lint-dependencies.sh
- hack/update-vendor.sh

Signed-off-by: Stephen Augustus <foo@auggie.dev>

Kubernetes-commit: d9435800b65d6787beaf061546599d757b8e87c9

plugin/pkg/client/auth/exec/exec.go

@@ -33,7 +33,8 @@ import (
 	"time"
 
 	"github.com/davecgh/go-spew/spew"
-	"golang.org/x/crypto/ssh/terminal"
+	"golang.org/x/term"
+
 	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
@@ -197,7 +198,7 @@ func newAuthenticator(c *cache, config *api.ExecConfig, cluster *clientauthentic
 
 		stdin:       os.Stdin,
 		stderr:      os.Stderr,
-		interactive: terminal.IsTerminal(int(os.Stdout.Fd())),
+		interactive: term.IsTerminal(int(os.Stdout.Fd())),
 		now:         time.Now,
 		environ:     os.Environ,