Bump nodemailer from 6.9.4 to 6.9.7 (#76)

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.9.4 to 6.9.7.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](nodemailer/nodemailer@v6.9.4...v6.9.7)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -19,7 +19,7 @@
     "express-fileupload": "^1.4.0",
     "express-session": "^1.17.3",
     "html-to-text": "^9.0.5",
-    "nodemailer": "^6.9.4",
+    "nodemailer": "^6.9.7",
     "mailgun.js": "^9.2.0",
     "keycloak-connect": "^22.0.5",
     "mariadb": "^3.2.0",