Bump nodemailer from 6.9.16 to 6.10.0 in /backend

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.9.16 to 6.10.0.
- [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/v6.9.16...v6.10.0)

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

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

backend/package.json

@@ -83,7 +83,7 @@
     "neo4j-graphql-js": "^2.11.5",
     "neode": "^0.4.9",
     "node-fetch": "^2.7.0",
-    "nodemailer": "^6.9.16",
+    "nodemailer": "^6.10.0",
     "nodemailer-html-to-text": "^3.2.0",
     "request": "~2.88.2",
     "sanitize-html": "~2.14.0",

backend/yarn.lock

@@ -7377,10 +7377,10 @@ nodemailer-html-to-text@^3.2.0:
   dependencies:
     html-to-text "7.1.1"
 
-nodemailer@^6.9.16:
-  version "6.9.16"
-  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.16.tgz#3ebdf6c6f477c571c0facb0727b33892635e0b8b"
-  integrity sha512-psAuZdTIRN08HKVd/E8ObdV6NO7NTBY3KsC30F7M4H1OnmLCUNaS56FpYxyb26zWLSyYF9Ozch9KYHhHegsiOQ==
+nodemailer@^6.10.0:
+  version "6.10.0"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.10.0.tgz#1f24c9de94ad79c6206f66d132776b6503003912"
+  integrity sha512-SQ3wZCExjeSatLE/HBaXS5vqUOQk6GtBdIIKxiFdmm01mOQZX/POJkO3SUX1wDiYcwUOJwT23scFSC9fY2H8IA==
 
 nodemon@~3.1.9:
   version "3.1.9"