Bump @oclif/plugin-help from 5.1.10 to 5.1.12 in /core (#166)

Bumps [@oclif/plugin-help](https://github.com/oclif/plugin-help) from 5.1.10 to 5.1.12.
- [Release notes](https://github.com/oclif/plugin-help/releases)
- [Changelog](https://github.com/oclif/plugin-help/blob/main/CHANGELOG.md)
- [Commits](oclif/plugin-help@v5.1.10...v5.1.12)

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

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

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

core/package.json

@@ -36,7 +36,7 @@
     "@oclif/command": "^1",
     "@oclif/config": "^1",
     "@oclif/core": "1.1.2",
-    "@oclif/plugin-help": "5.1.10",
+    "@oclif/plugin-help": "5.1.12",
     "@oclif/plugin-not-found": "^2.2.1",
     "@secman/spinner": "0.1.3",
     "ansi-regex": "5.0.1",