Bump handlebars from 4.7.3 to 4.7.7 in /frameworks/TypeScript/nest

Bumps [handlebars](https://github.com/handlebars-lang/handlebars.js) from 4.7.3 to 4.7.7.
- [Release notes](https://github.com/handlebars-lang/handlebars.js/releases)
- [Changelog](https://github.com/handlebars-lang/handlebars.js/blob/master/release-notes.md)
- [Commits](https://github.com/handlebars-lang/handlebars.js/compare/v4.7.3...v4.7.7)

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

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

frameworks/TypeScript/nest/package.json

@@ -23,7 +23,7 @@
     "cache-manager": "3.1.0",
     "fastify": "2.12.1",
     "fastify-formbody": "3.1.0",
-    "handlebars": "4.7.3",
+    "handlebars": "4.7.7",
     "hbs": "4.1.0",
     "mongodb": "3.5.4",
     "mysql2": "3.9.8",