chore(deps): update dependency @types/js-yaml to v4

Author: renovate[bot]

package.json

@@ -67,7 +67,7 @@
     "@sourcegraph/tsconfig": "^4.0.1",
     "@types/execa": "2.0.0",
     "@types/inquirer": "8.2.10",
-    "@types/js-yaml": "3.12.5",
+    "@types/js-yaml": "4.0.9",
     "@types/mkdirp-promise": "5.0.0",
     "@types/mz": "2.7.8",
     "@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@4.0.9":
+  version "4.0.9"
+  resolved "https://registry.yarnpkg.com/@types/js-yaml/-/js-yaml-4.0.9.tgz#cd82382c4f902fed9691a2ed79ec68c5898af4c2"
+  integrity sha512-k4MGaQl5TGo/iipqb2UDG2UwjXziSWkh0uysQelTlJpX1qGlpUZYm8PnO4DxG1qBomtJUdYJ6qR6xdIah10JLg==
 
 "@types/json-schema@^7.0.3", "@types/json-schema@^7.0.6":
   version "7.0.6"