Bump ejs from 2.5.9 to 3.1.7 in /node

Bumps [ejs](https://github.com/mde/ejs) from 2.5.9 to 3.1.7.
- [Release notes](https://github.com/mde/ejs/releases)
- [Changelog](https://github.com/mde/ejs/blob/main/CHANGELOG.md)
- [Commits](mde/ejs@v2.5.9...v3.1.7)

---
updated-dependencies:
- dependency-name: ejs
  dependency-type: direct:production
...

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

Author: dependabot[bot]

node/package-lock.json

@@ -15,7 +15,7 @@
     "body-parser": "1.18.x",
     "cors": "^2.8.5",
     "dotenv": "^8.2.0",
-    "ejs": "2.5.x",
+    "ejs": "3.1.x",
     "express": "4.16.x",
     "moment": "2.22.x",
     "nodemon": "^2.0.5",