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>

package.json

@@ -33,7 +33,7 @@
     "express-session": "1.17.0",
     "express-winston": "2.6.0",
     "frontexpress": "1.2.1",
-    "handlebars": "4.7.6",
+    "handlebars": "4.7.7",
     "i18next": "14.1.1",
     "i18next-browser-languagedetector": "2.2.4",
     "i18next-express-middleware": "1.9.1",