chore(deps): bump handlebars from 4.7.2 to 4.7.7

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.2 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@v4.7.2...v4.7.7)

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

Author: dependabot[bot]

package-lock.json

@@ -60,7 +60,7 @@
     "express-request-id": "^1.1.0",
     "express-sanitizer": "^1.0.2",
     "express-validation": "^1.0.3",
-    "handlebars": "^4.5.3",
+    "handlebars": "^4.7.7",
     "http-aws-es": "^4.0.0",
     "joi": "^8.0.5",
     "jsondiffpatch": "^0.4.1",