fix(deps): update @oclif/plugin-update requirement from ^4.1.7 to ^4.1.8

Updates the requirements on [@oclif/plugin-update](https://github.com/oclif/plugin-update) to permit the latest version.
- [Release notes](https://github.com/oclif/plugin-update/releases)
- [Changelog](https://github.com/oclif/plugin-update/blob/main/CHANGELOG.md)
- [Commits](oclif/plugin-update@4.1.7...4.1.8)

---
updated-dependencies:
- dependency-name: "@oclif/plugin-update"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -34,7 +34,7 @@
     "@oclif/plugin-help": "^5",
     "@oclif/plugin-not-found": "^3.0.8",
     "@oclif/plugin-plugins": "^4",
-    "@oclif/plugin-update": "^4.1.7",
+    "@oclif/plugin-update": "^4.1.8",
     "@oclif/plugin-warn-if-update-available": "^3.0.9",
     "adm-zip": "^0.5.10",
     "axios": "^1.6.5",