fix: global-cli/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-CROSSSPAWN-8303230

Author: snyk-bot

global-cli/package.json

@@ -21,7 +21,7 @@
   },
   "dependencies": {
     "chalk": "^1.1.1",
-    "cross-spawn": "^4.0.0",
+    "cross-spawn": "^7.0.5",
     "minimist": "^1.2.0",
     "semver": "^5.0.3"
   }