chore(deps): bump express-handlebars in /packages/botfuel-dialog

Bumps [express-handlebars](https://github.com/express-handlebars/express-handlebars) from 3.1.0 to 5.3.1.
- [Release notes](https://github.com/express-handlebars/express-handlebars/releases)
- [Changelog](https://github.com/express-handlebars/express-handlebars/blob/master/CHANGELOG.md)
- [Commits](express-handlebars/express-handlebars@v3.1.0...v5.3.1)

---
updated-dependencies:
- dependency-name: express-handlebars
  dependency-type: direct:production
...

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

packages/botfuel-dialog/package.json

@@ -32,7 +32,7 @@
     "convert-hrtime": "^3.0.0",
     "diacritics": "^1.3.0",
     "express": "^4.15.4",
-    "express-handlebars": "^3.0.0",
+    "express-handlebars": "^5.3.1",
     "fs": "0.0.1-security",
     "fs-extra": "^8.0.1",
     "lodash": "^4.17.4",