fix(deps): update dependency @oclif/plugin-help to v6

Author: renovate[bot]

kipper/cli/package.json

@@ -13,7 +13,7 @@
     "@kipper/target-ts": "workspace:~",
     "@oclif/command": "1.8.36",
     "@oclif/config": "1.18.8",
-    "@oclif/plugin-help": "3.3.1",
+    "@oclif/plugin-help": "6.2.5",
     "@oclif/parser": "3.8.10",
     "@oclif/errors": "1.3.6",
     "@oclif/plugin-warn-if-update-available": "2.0.37",