Bump ejs from 2.7.4 to 3.1.2

Bumps [ejs](https://github.com/mde/ejs) from 2.7.4 to 3.1.2.
- [Release notes](https://github.com/mde/ejs/releases)
- [Changelog](https://github.com/mde/ejs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mde/ejs/compare/v2.7.4...v3.1.2)

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

package.json

@@ -4,7 +4,7 @@
   "description": "ShareX API made in Nodejs. Includes images, videos, code, text, and url shortening",
   "dependencies": {
     "body-parser": "^1.18.3",
-    "ejs": "^2.6.1",
+    "ejs": "^3.1.2",
     "eris": "^0.13.1",
     "express": "^4.16.4",
     "formidable": "^1.2.1",