build(deps-dev): bump handlebars from 4.7.6 to 4.7.7

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.6 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@v4.7.6...v4.7.7)

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

Author: dependabot[bot]

package-lock.json

@@ -70,7 +70,7 @@
     "eslint-config-prettier": "^6.11.0",
     "eslint-plugin-jest": "^23.20.0",
     "form-data": "^3.0.0",
-    "handlebars": "^4.7.6",
+    "handlebars": "^4.7.7",
     "http-status-codes": "^2.1.4",
     "husky": "^4.3.8",
     "jest": "^26.2.2",