Bump shelljs from 0.8.5 to 0.9.1 (#366)

Bumps [shelljs](https://github.com/shelljs/shelljs) from 0.8.5 to 0.9.1.
- [Release notes](https://github.com/shelljs/shelljs/releases)
- [Changelog](https://github.com/shelljs/shelljs/blob/master/CHANGELOG.md)
- [Commits](shelljs/shelljs@v0.8.5...v0.9.1)

---
updated-dependencies:
- dependency-name: shelljs
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Diff for: package.json

@@ -85,7 +85,7 @@
     "gts": "^6.0.2",
     "jest": "^29.4.1",
     "npm-run-all": "^4.1.5",
-    "shelljs": "^0.8.4",
+    "shelljs": "^0.9.1",
     "simple-git": "^3.15.1",
     "source-map-js": "^1.0.2",
     "tar": "^6.0.5",