Update dependency simple-git to v3 [SECURITY]

Author: renovate[bot]

Src/ReadMeSynchronizer/package.json

@@ -11,7 +11,7 @@
         "gulp-typescript": "^2.5.0",
         "gulpclass": "^0.2.0",
         "natives": "^1.1.6",
-        "simple-git": "^1.96.0",
+        "simple-git": "^3.0.0",
         "ts-enum-util": "3.1.0",
         "ts-node": "^7.0.0",
         "tslint": "^5.11.0",