chore: move @types/nodemailer from devDependencies to dependencies

Author: 3m1n3nc3

packages/notifications/package.json

@@ -38,6 +38,7 @@
     },
     "dependencies": {
         "@arkstack/common": "workspace:^",
+        "@types/nodemailer": "^7.0.11",
         "africastalking": "^0.8.0",
         "nodemailer": "^9.0.3",
         "twilio": "^6.0.2"
@@ -61,7 +62,6 @@
         }
     },
     "devDependencies": {
-        "@types/africastalking": "^0.8.0",
-        "@types/nodemailer": "^7.0.11"
+        "@types/africastalking": "^0.8.0"
     }
-}
+}