build(deps): bump nodemailer from 7.0.5 to 7.0.6 in /backend

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 7.0.5 to 7.0.6.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodemailer/nodemailer/compare/v7.0.5...v7.0.6)

---
updated-dependencies:
- dependency-name: nodemailer
  dependency-version: 7.0.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

backend/package-lock.json

@@ -13,7 +13,7 @@
         "@types/jest": "^30.0.0",
         "@types/nodemailer": "^7.0.1",
         "fastify": "^5.6.0",
-        "nodemailer": "^7.0.5",
+        "nodemailer": "^7.0.6",
         "ts-dotenv": "^0.9.1"
       },
       "devDependencies": {
@@ -8302,9 +8302,9 @@
       "license": "MIT"
     },
     "node_modules/nodemailer": {
-      "version": "7.0.5",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-7.0.5.tgz",
-      "integrity": "sha512-nsrh2lO3j4GkLLXoeEksAMgAOqxOv6QumNRVQTJwKH4nuiww6iC2y7GyANs9kRAxCexg3+lTWM3PZ91iLlVjfg==",
+      "version": "7.0.6",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-7.0.6.tgz",
+      "integrity": "sha512-F44uVzgwo49xboqbFgBGkRaiMgtoBrBEWCVincJPK9+S9Adkzt/wXCLKbf7dxucmxfTI5gHGB+bEmdyzN6QKjw==",
       "license": "MIT-0",
       "engines": {
         "node": ">=6.0.0"

backend/package.json

@@ -44,7 +44,7 @@
     "@types/jest": "^30.0.0",
     "@types/nodemailer": "^7.0.1",
     "fastify": "^5.6.0",
-    "nodemailer": "^7.0.5",
+    "nodemailer": "^7.0.6",
     "ts-dotenv": "^0.9.1"
   },
   "jest": {