fix(deps): update dependency nodemailer to v6.9.0 (#11205)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

install/package.json

@@ -103,7 +103,7 @@
         "nodebb-theme-slick": "2.0.4",
         "nodebb-theme-vanilla": "12.1.19",
         "nodebb-widget-essentials": "6.0.1",
-        "nodemailer": "6.8.0",
+        "nodemailer": "6.9.0",
         "nprogress": "0.2.0",
         "passport": "0.6.0",
         "passport-http-bearer": "1.0.1",