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>

yarn.lock

@@ -1672,8 +1672,8 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.4:
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
 handlebars@^4.0.11:
-  version "4.7.6"
-  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.6.tgz#d4c05c1baf90e9945f77aa68a7a219aa4a7df74e"
+  version "4.7.7"
+  resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.7.7.tgz#9ce33416aad02dbd6c8fafa8240d5d98004945a1"
   dependencies:
     minimist "^1.2.5"
     neo-async "^2.6.0"
@@ -3815,8 +3815,8 @@ typescript@^2.7.2:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-2.8.3.tgz#5d817f9b6f31bb871835f4edf0089f21abe6c170"
 
 uglify-js@^3.1.4:
-  version "3.10.1"
-  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.10.1.tgz#dd14767eb7150de97f2573a5ff210db14fffe4ad"
+  version "3.13.5"
+  resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.13.5.tgz#5d71d6dbba64cf441f32929b1efce7365bb4f113"
 
 uid2@0.0.3:
   version "0.0.3"