build(deps): bump @oclif/core from 1.6.3 to 1.6.4 in /core (#194)

Bumps [@oclif/core](https://github.com/oclif/core) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/oclif/core/releases)
- [Changelog](https://github.com/oclif/core/blob/main/CHANGELOG.md)
- [Commits](oclif/core@v1.6.3...v1.6.4)

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

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

Author: dependabot[bot]

core/package.json

@@ -32,7 +32,7 @@
   "dependencies": {
     "@oclif/command": "^1",
     "@oclif/config": "^1",
-    "@oclif/core": "1.6.3",
+    "@oclif/core": "1.6.4",
     "@oclif/plugin-help": "5.1.12",
     "@oclif/plugin-not-found": "^2.2.1",
     "@secman/crypto": "*",