chore: update @oclif/core to latest version #391
Description
This is to support adobe/aio-cli#781
Summary
Update @oclif/core from 1.26.2 to the latest version (4.9.0).
Current state
@adobe/aio-cli-plugin-runtime@8.0.0 depends on @oclif/core@1.26.2.
Desired state
Update to @oclif/core@4.9.0 (latest).
Notes
- Review the oclif/core changelog for breaking changes between v1 and v4.
- This is part of a broader effort to update all aio-cli plugins to the latest
@oclif/core.