Bump handlebars from 4.5.3 to 4.7.7

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.5.3 to 4.7.7.
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/master/release-notes.md)
- [Commits](handlebars-lang/handlebars.js@v4.5.3...v4.7.7)

---
updated-dependencies:
- dependency-name: handlebars
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -27,7 +27,7 @@
         "request-promise-native": "1.0.7",
         "@types/request-promise-native": "1.0.16",
         "request": "2.88.0",
-        "handlebars": "4.5.3"
+        "handlebars": "4.7.7"
     },
     "keywords": [
         "typescript",