Bump ejs from 1.0.0 to 2.7.1

Bumps [ejs](https://github.com/mde/ejs) from 1.0.0 to 2.7.1.
- [Release notes](https://github.com/mde/ejs/releases)
- [Changelog](https://github.com/mde/ejs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mde/ejs/commits/v2.7.1)

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

package.json

@@ -15,7 +15,7 @@
         "base64id": "~0.1.0",
         "connect": "~2.12.0",
         "debug": "~0.7.4",
-        "ejs": "~1.0.0",
+        "ejs": "~2.7.1",
         "emmet": "git+https://github.com/cloud9ide/emmet-core.git#2ff6dc06ad",
         "engine.io": "1.6.9",
         "engine.io-client": "1.6.9",