Bump uglify-js from 3.15.3 to 3.16.1

Bumps [uglify-js](https://github.com/mishoo/UglifyJS) from 3.15.3 to 3.16.1.
- [Release notes](https://github.com/mishoo/UglifyJS/releases)
- [Commits](https://github.com/mishoo/UglifyJS/compare/v3.15.3...v3.16.1)

---
updated-dependencies:
- dependency-name: uglify-js
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package-lock.json

@@ -1868,9 +1868,9 @@
       }
     },
     "node_modules/uglify-js": {
-      "version": "3.15.3",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.15.3.tgz",
-      "integrity": "sha512-6iCVm2omGJbsu3JWac+p6kUiOpg3wFO2f8lIXjfEb8RrmLjzog1wTPMmwKB7swfzzqxj9YM+sGUM++u1qN4qJg==",
+      "version": "3.16.1",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.16.1.tgz",
+      "integrity": "sha512-X5BGTIDH8U6IQ1TIRP62YC36k+ULAa1d59BxlWvPUJ1NkW5L3FwcGfEzuVvGmhJFBu0YJ5Ge25tmRISqCmLiRQ==",
       "dev": true,
       "bin": {
         "uglifyjs": "bin/uglifyjs"
@@ -3390,9 +3390,9 @@
       "integrity": "sha512-Ne+eE4r0/iWnpAxD852z3A+N0Bt5RN//NjJwRd2VFHEmrywxf5vsZlh4R6lixl6B+wz/8d+maTSAkN1FIkI3LQ=="
     },
     "uglify-js": {
-      "version": "3.15.3",
-      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.15.3.tgz",
-      "integrity": "sha512-6iCVm2omGJbsu3JWac+p6kUiOpg3wFO2f8lIXjfEb8RrmLjzog1wTPMmwKB7swfzzqxj9YM+sGUM++u1qN4qJg==",
+      "version": "3.16.1",
+      "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.16.1.tgz",
+      "integrity": "sha512-X5BGTIDH8U6IQ1TIRP62YC36k+ULAa1d59BxlWvPUJ1NkW5L3FwcGfEzuVvGmhJFBu0YJ5Ge25tmRISqCmLiRQ==",
       "dev": true
     },
     "update-check": {