chore(deps): [security] bump handlebars from 4.1.2 to 4.5.3 (#325)

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.1.2 to 4.5.3. **This update includes a security fix.**
- [Release notes](https://github.com/wycats/handlebars.js/releases)
- [Changelog](https://github.com/wycats/handlebars.js/blob/master/release-notes.md)
- [Commits](handlebars-lang/handlebars.js@v4.1.2...v4.5.3)

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

yarn.lock

@@ -404,9 +404,9 @@ commander@^2.12.1:
   version "2.19.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.19.0.tgz#f6198aa84e5b83c46054b94ddedbfed5ee9ff12a"
 
-commander@~2.20.0:
-  version "2.20.0"
-  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.0.tgz#d58bb2b5c1ee8f87b0d340027e9e94e222c5a422"
+commander@~2.20.3:
+  version "2.20.3"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
 
 commondir@^1.0.1:
   version "1.0.1"
@@ -1029,8 +1029,8 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2:
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.15.tgz#ffb703e1066e8a0eeaa4c8b80ba9253eeefbfb00"
 
 handlebars@^4.0.2, handlebars@^4.0.3:
-  version "4.1.2"
-  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.1.2.tgz#b6b37c1ced0306b221e094fc7aca3ec23b131b67"
+  version "4.5.3"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.5.3.tgz#5cf75bd8714f7605713511a56be7c349becb0482"
   dependencies:
     neo-async "^2.6.0"
     optimist "^0.6.1"
@@ -2592,10 +2592,10 @@ typescript@3.1.6:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.1.6.tgz#b6543a83cfc8c2befb3f4c8fba6896f5b0c9be68"
 
 uglify-js@^3.1.4:
-  version "3.6.0"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.6.0.tgz#704681345c53a8b2079fb6cec294b05ead242ff5"
+  version "3.7.2"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.7.2.tgz#cb1a601e67536e9ed094a92dd1e333459643d3f9"
   dependencies:
-    commander "~2.20.0"
+    commander "~2.20.3"
     source-map "~0.6.1"
 
 union-value@^1.0.0: