fix(deps): update dependency js-yaml to v4

package.json

@@ -53,7 +53,7 @@
     "execa": "^4.0.2",
     "got": "^10.7.0",
     "inquirer": "^7.1.0",
-    "js-yaml": "^3.14.0",
+    "js-yaml": "^4.1.0",
     "mkdirp-promise": "^5.0.1",
     "mz": "^2.7.0",
     "npm-registry-client": "^8.6.0",
@@ -67,7 +67,7 @@
     "@sourcegraph/tsconfig": "^4.0.1",
     "@types/execa": "0.9.0",
     "@types/inquirer": "8.2.6",
-    "@types/js-yaml": "3.12.5",
+    "@types/js-yaml": "4.0.7",
     "@types/mkdirp-promise": "5.0.0",
     "@types/mz": "2.7.5",
     "@types/node": "12.20.55",

yarn.lock

@@ -714,10 +714,10 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/js-yaml@3.12.5":
-  version "3.12.5"
-  resolved "https://registry.yarnpkg.com/@types/js-yaml/-/js-yaml-3.12.5.tgz#136d5e6a57a931e1cce6f9d8126aa98a9c92a6bb"
-  integrity sha512-JCcp6J0GV66Y4ZMDAQCXot4xprYB+Zfd3meK9+INSJeVZwJmHAW30BBEEkPzXswMXuiyReUGOP3GxrADc9wPww==
+"@types/js-yaml@4.0.7":
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/@types/js-yaml/-/js-yaml-4.0.7.tgz#f11c2ec37bb748fa5cfa3262abcb8b1cfd83d8ae"
+  integrity sha512-RJZP9WAMMr1514KbdSXkLRrKvYQacjr1+HWnY8pui/uBTBoSgD9ZGR17u/d4nb9NpERp0FkdLBe7hq8NIPBgkg==
 
 "@types/json-schema@^7.0.3", "@types/json-schema@^7.0.6":
   version "7.0.6"
@@ -4076,7 +4076,7 @@ java-properties@^1.0.0:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.13.1, js-yaml@^3.14.0:
+js-yaml@^3.13.1:
   version "3.14.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.0.tgz#a7a34170f26a21bb162424d8adacb4113a69e482"
   integrity sha512-/4IbIeHcD9VMHFqDR/gQ7EdZdLimOvW2DdcxFjdyyZ9NsbS+ccrXqVWDtab/lRl5AlUqmpBx8EhPaWR+OtY17A==