chore(deps): bump simple-git from 3.6.0 to 3.15.0 (#17)

Bumps [simple-git](https://github.com/steveukx/git-js/tree/HEAD/simple-git) from 3.6.0 to 3.15.0.
- [Release notes](https://github.com/steveukx/git-js/releases)
- [Changelog](https://github.com/steveukx/git-js/blob/main/simple-git/CHANGELOG.md)
- [Commits](https://github.com/steveukx/git-js/commits/simple-git@3.15.0/simple-git)

---
updated-dependencies:
- dependency-name: simple-git
  dependency-type: direct:production
...

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Author: dependabot[bot]

package-lock.json

@@ -12,7 +12,7 @@
     "auto-parse": "^1.8.0",
     "date-fns": "^2.14.0",
     "dotenv-extended": "^2.8.0",
-    "simple-git": "^3.4.0"
+    "simple-git": "^3.15.0"
   },
   "devDependencies": {
     "@types/jest": "^25.2.3",