chore(deps): update dependency @types/nodemailer to v7

Author: renovate[bot]

packages/backend/apps/common/backend-adapter-nodemailer/package.json

@@ -16,7 +16,7 @@
     "@stryker-mutator/jest-runner": "9.0.1",
     "@stryker-mutator/typescript-checker": "9.0.1",
     "@types/node": "22.15.31",
-    "@types/nodemailer": "6.4.17",
+    "@types/nodemailer": "7.0.0",
     "@typescript-eslint/eslint-plugin": "8.34.0",
     "@typescript-eslint/parser": "8.34.0",
     "eslint": "9.29.0",