Update Simple Git base version

To prevent install of not working version when importing

steveukx/git-js#866

Author: martinratinaud

package-lock.json

@@ -93,7 +93,7 @@
     "puppeteer-extra": "^3.2.3",
     "puppeteer-extra-plugin-stealth": "^2.9.0",
     "sib-api-v3-sdk": "^8.2.1",
-    "simple-git": "^3.8.0",
+    "simple-git": "3.15.1",
     "winston": "^3.3.3",
     "winston-mail": "^2.0.0"
   },