build(deps): bump nodemailer in /apps/OpenSignServer

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.9.14 to 6.9.15.
- [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/v6.9.14...v6.9.15)

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

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

apps/OpenSignServer/package-lock.json

@@ -29,7 +29,7 @@
         "multer": "^1.4.5-lts.1",
         "multer-s3": "^3.0.1",
         "node-forge": "^1.3.1",
-        "nodemailer": "^6.9.14",
+        "nodemailer": "^6.9.15",
         "parse": "^5.3.0",
         "parse-dbtool": "^1.2.0",
         "parse-server": "^7.2.0",
@@ -8548,9 +8548,9 @@
       "integrity": "sha512-d9VeXT4SJ7ZeOqGX6R5EM022wpL+eWPooLI+5UpWn2jCT1aosUQEhQP214x33Wkwx3JQMvIm+tIoVOdodFS40g=="
     },
     "node_modules/nodemailer": {
-      "version": "6.9.14",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.14.tgz",
-      "integrity": "sha512-Dobp/ebDKBvz91sbtRKhcznLThrKxKt97GI2FAlAyy+fk19j73Uz3sBXolVtmcXjaorivqsbbbjDY+Jkt4/bQA==",
+      "version": "6.9.15",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.15.tgz",
+      "integrity": "sha512-AHf04ySLC6CIfuRtRiEYtGEXgRfa6INgWGluDhnxTZhHSKvrBu7lc1VVchQ0d8nPc4cFaZoPq8vkyNoZr0TpGQ==",
       "engines": {
         "node": ">=6.0.0"
       }

apps/OpenSignServer/package.json

@@ -38,7 +38,7 @@
     "multer": "^1.4.5-lts.1",
     "multer-s3": "^3.0.1",
     "node-forge": "^1.3.1",
-    "nodemailer": "^6.9.14",
+    "nodemailer": "^6.9.15",
     "parse": "^5.3.0",
     "parse-dbtool": "^1.2.0",
     "parse-server": "^7.2.0",