build(deps): bump opn from 5.3.0 to 6.0.0

Bumps [opn](https://github.com/sindresorhus/open) from 5.3.0 to 6.0.0.
- [Release notes](https://github.com/sindresorhus/open/releases)
- [Commits](https://github.com/sindresorhus/open/compare/v5.3.0...v6.0.0)

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

packages/embark-webserver/package.json

@@ -53,7 +53,7 @@
     "express": "4.16.3",
     "express-http-proxy": "1.5.1",
     "express-ws": "4.0.0",
-    "opn": "5.3.0",
+    "opn": "6.0.0",
     "serve-static": "1.13.2"
   },
   "devDependencies": {

packages/embark/package.json

@@ -166,7 +166,7 @@
     "node-ipc": "9.1.1",
     "node-sass": "4.9.3",
     "npmlog": "4.1.2",
-    "opn": "5.3.0",
+    "opn": "6.0.0",
     "ora": "2.1.0",
     "os-locale": "3.0.1",
     "parse-json": "4.0.0",

yarn.lock

@@ -15143,13 +15143,6 @@ open@^6.1.0, open@^6.3.0:
   dependencies:
     is-wsl "^1.1.0"
 
-opn@5.3.0:
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/opn/-/opn-5.3.0.tgz#64871565c863875f052cfdf53d3e3cb5adb53b1c"
-  integrity sha512-bYJHo/LOmoTd+pfiYhfZDnf9zekVJrY+cnS2a5F2x+w5ppvTqObojTP7WiFG+kVZs9Inw+qQ/lw7TroWwhdd2g==
-  dependencies:
-    is-wsl "^1.1.0"
-
 opn@5.4.0, opn@^5.1.0:
   version "5.4.0"
   resolved "https://registry.yarnpkg.com/opn/-/opn-5.4.0.tgz#cb545e7aab78562beb11aa3bfabc7042e1761035"
@@ -15157,6 +15150,13 @@ opn@5.4.0, opn@^5.1.0:
   dependencies:
     is-wsl "^1.1.0"
 
+opn@6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/opn/-/opn-6.0.0.tgz#3c5b0db676d5f97da1233d1ed42d182bc5a27d2d"
+  integrity sha512-I9PKfIZC+e4RXZ/qr1RhgyCnGgYX0UEIlXgWnCOVACIvFgaC9rz6Won7xbdhoHrd8IIhV7YEpHjreNUNkqCGkQ==
+  dependencies:
+    is-wsl "^1.1.0"
+
 optimist@^0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/optimist/-/optimist-0.6.1.tgz#da3ea74686fa21a19a111c326e90eb15a0196686"