Bump handlebars from 4.7.4 to 4.7.6

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.4 to 4.7.6.
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/wycats/handlebars.js/blob/master/release-notes.md)
- [Commits](https://github.com/wycats/handlebars.js/compare/v4.7.4...v4.7.6)

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

package.json

@@ -68,7 +68,7 @@
     "fs-extra": "^9.0.0",
     "glob": "^7.1.5",
     "globby": "^11.0.0",
-    "handlebars": "4.7.4",
+    "handlebars": "4.7.6",
     "istanbul": "0.4.5",
     "istanbul-instrumenter-loader": "^3.0.1",
     "jquery": "3.4.1",