Added missing dependency

Author: Florian Treml

package.json

@@ -1,6 +1,6 @@
 {
   "name": "botium-cli",
-  "version": "1.0.9",
+  "version": "1.0.10",
   "description": "Botium - The Selenium for Chatbots",
   "main": "dist/botium-cli-cjs.js",
   "module": "dist/botium-cli-es.js",
@@ -55,6 +55,7 @@
     "debug": "^4.3.1",
     "figlet": "^1.5.0",
     "fs-extra": "^9.1.0",
+    "is-json": "^2.0.1",
     "lodash": "^4.17.21",
     "mime-types": "^2.1.30",
     "mkdirp": "^1.0.4",