fix: add issuer in openid config

packages/nc-gui/lang/en.json

@@ -1253,6 +1253,7 @@
       "authUrlRequired": "Auth URL is required",
       "userNameAttributeRequired": "Username attribute is required",
       "clientIdRequired": "Client ID is required",
+      "issuerRequired": "Issuer is required",
       "clientSecretRequired": "Client Secret is required",
       "jwkUrlRequired": "JWK URL is required",
       "tokenUrlRequired": "Token URL is required",