Update dependency js-yaml to v4

Author: renovate-bot

package.json

@@ -114,7 +114,7 @@
     "indexeddbshim": "7.0.0",
     "inquirer": "7.3.3",
     "istanbul-instrumenter-loader": "3.0.1",
-    "js-yaml": "3.14.0",
+    "js-yaml": "4.0.0",
     "karma": "5.2.3",
     "karma-chrome-launcher": "3.1.0",
     "karma-cli": "2.0.0",

yarn.lock

@@ -3684,6 +3684,11 @@ argparse@^1.0.7, argparse@~1.0.9:
   dependencies:
     sprintf-js "~1.0.2"
 
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
+  integrity sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==
+
 argsarray@^0.0.1:
   version "0.0.1"
   resolved "https://registry.npmjs.org/argsarray/-/argsarray-0.0.1.tgz#6e7207b4ecdb39b0af88303fa5ae22bda8df61cb"
@@ -9839,6 +9844,13 @@ [email protected], js-yaml@^3.13.0, js-yaml@^3.13.1, js-yaml@^3.6.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+[email protected]:
+  version "4.0.0"
+  resolved "https://registry.npmjs.org/js-yaml/-/js-yaml-4.0.0.tgz#f426bc0ff4b4051926cd588c71113183409a121f"
+  integrity sha512-pqon0s+4ScYUvX30wxQi3PogGFAlUyH0awepWvwkj4jD4v+ova3RiYw8bmA6x2rDrEaj8i/oWKoRxpVNW+Re8Q==
+  dependencies:
+    argparse "^2.0.1"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.npmjs.org/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"