refactor: fix build warnings (#1090)

gost/debian_test.go

@@ -53,7 +53,7 @@ func TestDebian_Supported(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			deb := Debian{}
-			if got := deb.Supported(tt.args.major); got != tt.want {
+			if got := deb.supported(tt.args.major); got != tt.want {
 				t.Errorf("Debian.Supported() = %v, want %v", got, tt.want)
 			}
 		})