chore: braces and ejs vulns (#4116)

# Summary

Address vulnarabilities in ejs and braces by running `npm update
@oclif/plugin-help`

-
https://github.com/slsa-framework/slsa-github-generator/security/dependabot/111
-
https://github.com/slsa-framework/slsa-github-generator/security/dependabot/97

## Testing Process

pre-submits pass

## Checklist

- [x] Review the contributing
[guidelines](https://github.com/slsa-framework/slsa-github-generator/blob/main/CONTRIBUTING.md)
- [x] Add a reference to related issues in the PR description.
- [x] Update documentation if applicable.
- [x] Add unit tests if applicable.
- [x] Add changes to the
[CHANGELOG](https://github.com/slsa-framework/slsa-github-generator/blob/main/CHANGELOG.md)
if applicable.

Signed-off-by: Ramon Petgrave <32398091+ramonpetgrave64@users.noreply.github.com>