Update brand-plugin-test.yml

[circlecube]

Proposed changes

This sets the plugin branch to solutions

There are no tests as of yet, but we'll need to write some and when we do they need to target the bluehost plugin solutions branch (and omit the other plugins for now). Once this is released we can remove the target plugin-branch input back to the default (main).

Type of Change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Video

Checklist

• I have read the CONTRIBUTING doc
• I have viewed my change in a web-browser
• Linting and tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments