bump shell js version

Author: jatinkatyal13

package.json

@@ -10,7 +10,7 @@
     "@types/chai": "^4.0.4",
     "@types/mocha": "^5.0.0",
     "@types/node": "10",
-    "@types/shelljs": "^0.8.0",
+    "@types/shelljs": "^0.8.3",
     "chai": "^4.1.2",
     "mocha": "^5.0.4",
     "mocha-parallel-tests": "^2.0.0",

yarn.lock

@@ -69,10 +69,10 @@
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.17.17.tgz#7a183163a9e6ff720d86502db23ba4aade5999b8"
   integrity sha512-gpNnRnZP3VWzzj5k3qrpRC6Rk3H/uclhAVo1aIvwzK5p5cOrs9yEyQ8H/HBsBY0u5rrWxXEiVPQ0dEB6pkjE8Q==
 
-"@types/shelljs@^0.8.0":
-  version "0.8.1"
-  resolved "https://registry.yarnpkg.com/@types/shelljs/-/shelljs-0.8.1.tgz#133e874b5fb816a2e1c8647839c82d76760b1191"
-  integrity sha512-1lQw+48BuVgp6c1+z8EMipp18IdnV2dLh6KQGwOm+kJy9nPjEkaqRKmwbDNEYf//EKBvKcwOC6V2cDrNxVoQeQ==
+"@types/shelljs@^0.8.3":
+  version "0.8.7"
+  resolved "https://registry.yarnpkg.com/@types/shelljs/-/shelljs-0.8.7.tgz#a2a606b185165abadf8b7995fea5e326e637088e"
+  integrity sha512-Mg2qGjLIJIieeJ1/NjswAOY9qXDShLeh6JwpD1NZsvUvI0hxdUCNDpnBXv9YQeugKi2EHU+BqkbUE4jpY4GKmQ==
   dependencies:
     "@types/glob" "*"
     "@types/node" "*"