Bump ejs from 3.0.1 to 3.1.7

Bumps [ejs](https://github.com/mde/ejs) from 3.0.1 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@v3.0.1...v3.1.7)

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

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

package.json

@@ -20,7 +20,7 @@
   "dependencies": {
     "cors": "^2.8.5",
     "diskdb": "^0.1.17",
-    "ejs": "^3.0.1",
+    "ejs": "^3.1.7",
     "express": "^4.17.1",
     "express-session": "^1.17.0",
     "mustache": "^3.1.0",