chore: terser v4.4.2

fix for
terser/terser#527

package.json

@@ -110,7 +110,7 @@
     "sinon-chrome": "3.0.1",
     "standard": "14.3.1",
     "tar": "5.0.5",
-    "terser": "4.4.1",
+    "terser": "4.4.2",
     "terser-webpack-plugin": "2.2.1",
     "transform-loader": "0.2.4",
     "web-ext": "3.2.1",

yarn.lock

@@ -14202,10 +14202,10 @@ terser-webpack-plugin@^1.4.1:
     webpack-sources "^1.4.0"
     worker-farm "^1.7.0"
 
-[email protected].1:
-  version "4.4.1"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-4.4.1.tgz#f3a469c125d9a0eb52f1e6a7fdff587bd6e35902"
-  integrity sha512-e05giplw+8sIYh50qXYHZmr0b76O5dOSm9JwSDebGFLri4ItYzxsnumiAK+yuI56R+H7uIjT9KbVEKNkrprzHw==
+[email protected].2:
+  version "4.4.2"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.4.2.tgz#448fffad0245f4c8a277ce89788b458bfd7706e8"
+  integrity sha512-Uufrsvhj9O1ikwgITGsZ5EZS6qPokUOkCegS7fYOdGTv+OA90vndUbU6PEjr5ePqHfNUbGyMO7xyIZv2MhsALQ==
   dependencies:
     commander "^2.20.0"
     source-map "~0.6.1"