build: update opn to version 5.4.0

Author: renovate-bot

packages/angular/cli/package.json

@@ -32,7 +32,7 @@
     "@schematics/angular": "0.0.0",
     "@schematics/update": "0.0.0",
     "inquirer": "6.2.1",
-    "opn": "5.3.0",
+    "opn": "5.4.0",
     "semver": "5.5.1",
     "symbol-observable": "1.2.0"
   },

packages/angular_devkit/build_angular/package.json

@@ -28,7 +28,7 @@
     "mini-css-extract-plugin": "0.5.0",
     "minimatch": "3.0.4",
     "parse5": "4.0.0",
-    "opn": "5.3.0",
+    "opn": "5.4.0",
     "portfinder": "1.0.17",
     "postcss": "7.0.5",
     "postcss-import": "12.0.0",

yarn.lock

@@ -7018,14 +7018,7 @@ onetime@^2.0.0:
   dependencies:
     mimic-fn "^1.0.0"
 
-opn@5.3.0:
-  version "5.3.0"
-  resolved "http://registry.npmjs.org/opn/-/opn-5.3.0.tgz#64871565c863875f052cfdf53d3e3cb5adb53b1c"
-  integrity sha512-bYJHo/LOmoTd+pfiYhfZDnf9zekVJrY+cnS2a5F2x+w5ppvTqObojTP7WiFG+kVZs9Inw+qQ/lw7TroWwhdd2g==
-  dependencies:
-    is-wsl "^1.1.0"
-
-opn@^5.1.0:
+opn@5.4.0, opn@^5.1.0:
   version "5.4.0"
   resolved "https://registry.yarnpkg.com/opn/-/opn-5.4.0.tgz#cb545e7aab78562beb11aa3bfabc7042e1761035"
   integrity sha512-YF9MNdVy/0qvJvDtunAOzFw9iasOQHpVthTCvGzxt61Il64AYSGdK+rYwld7NAfk9qJ7dt+hymBNSc9LNYS+Sw==