Bump handlebars from 4.7.2 to 4.7.3

Bumps [handlebars](https://github.com/wycats/handlebars.js) from 4.7.2 to 4.7.3.
- [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/v4.7.2...v4.7.3)

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

package-lock.json

@@ -7059,9 +7059,9 @@
       "integrity": "sha1-BO93hiz/K7edMPdpIJWTAiK/YPE="
     },
     "handlebars": {
-      "version": "4.7.2",
-      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.2.tgz",
-      "integrity": "sha512-4PwqDL2laXtTWZghzzCtunQUTLbo31pcCJrd/B/9JP8XbhVzpS5ZXuKqlOzsd1rtcaLo4KqAn8nl8mkknS4MHw==",
+      "version": "4.7.3",
+      "resolved": "https://registry.npmjs.org/handlebars/-/handlebars-4.7.3.tgz",
+      "integrity": "sha512-SRGwSYuNfx8DwHD/6InAPzD6RgeruWLT+B8e8a7gGs8FWgHzlExpTFMEq2IA6QpAfOClpKHy6+8IqTjeBCu6Kg==",
       "requires": {
         "neo-async": "^2.6.0",
         "optimist": "^0.6.1",
@@ -11436,9 +11436,9 @@
       "dev": true
     },
     "uglify-js": {
-      "version": "3.7.5",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.7.5.tgz",
-      "integrity": "sha512-GFZ3EXRptKGvb/C1Sq6nO1iI7AGcjyqmIyOw0DrD0675e+NNbGO72xmMM2iEBdFbxaTLo70NbjM/Wy54uZIlsg==",
+      "version": "3.7.7",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.7.7.tgz",
+      "integrity": "sha512-FeSU+hi7ULYy6mn8PKio/tXsdSXN35lm4KgV2asx00kzrLU9Pi3oAslcJT70Jdj7PHX29gGUPOT6+lXGBbemhA==",
       "optional": true,
       "requires": {
         "commander": "~2.20.3",

package.json

@@ -47,7 +47,7 @@
     "debounce": "^1.2.0",
     "dompurify": "^2.0.8",
     "escape-html": "^1.0.3",
-    "handlebars": "^4.7.2",
+    "handlebars": "^4.7.3",
     "jcrop": "git+https://github.com/ChristophWurst/Jcrop.git#v0.9.12-npm3",
     "jquery": "2.1.4",
     "jquery-migrate": "^1.4.1",