fix(deps): update dependency nodemailer to v6.7.8

Author: renovate[bot]

package-lock.json

@@ -58,7 +58,7 @@
     "moment": "2.29.3",
     "mysql2": "2.3.3",
     "node-fetch": "2.6.7",
-    "nodemailer": "6.7.7",
+    "nodemailer": "6.7.8",
     "pug": "3.0.2",
     "qiniu": "7.7.0",
     "rand-token": "1.0.1",