Make the new sign-out button translatable

frontend/locales/en.json

@@ -46,6 +46,10 @@
         "change_disabled": "Password changes are disabled by the administrator.",
         "label": "Password"
       },
+      "sign_out": {
+        "button": "Sign out of account",
+        "dialog": "Sign out of this account?"
+      },
       "title": "Your account"
     },
     "add_email_form": {

frontend/src/routes/_account.index.lazy.tsx

@@ -35,11 +35,11 @@ const SignOutButton: React.FC<{ id: string }> = ({ id }) => {
     <Dialog.Dialog
       trigger={
         <Button kind="primary" destructive size="lg" Icon={IconSignOut}>
-          Sign out of account
+          {t("frontend.account.sign_out.button")}
         </Button>
       }
     >
-      <Dialog.Title>Sign out of your account?</Dialog.Title>
+      <Dialog.Title>{t("frontend.account.sign_out.dialog")}</Dialog.Title>
 
       <Button
         type="button"