replace deprecated dependency

The term part was moved to a separate library.

cmd/monfront/main.go

@@ -20,7 +20,7 @@ import (
 
 	"github.com/BurntSushi/toml"
 	"github.com/lib/pq"
-	"golang.org/x/crypto/ssh/terminal"
+	"golang.org/x/term"
 )
 
 var (
@@ -72,7 +72,7 @@ func main() {
 		switch flag.Arg(0) {
 		case "pwgen":
 			fmt.Printf("enter password: ")
-			pw, err := terminal.ReadPassword(0)
+			pw, err := term.ReadPassword(0)
 			fmt.Println()
 			if err != nil {
 				log.Fatalf("could not read password: %s", err)
@@ -94,7 +94,7 @@ func main() {
 		log.Fatalf("config '%s' is world readable!", *configPath)
 	}
 
-	raw, err := ioutil.ReadFile(*configPath)
+	raw, err := os.ReadFile(*configPath)
 	if err != nil {
 		log.Fatalf("could not read config: %s", err)
 	}