feat: build and deploy via GH actions only (no deploy script)

[GriceTurrble]

New actions available in GitHub allow for building and deploying the site
completely from the actions workflow with minimal code.
The deploy.sh script is no longer necessary with these changes.

Description

Type of change

• Bug fix (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

How has this been tested

• ❗ Removed I have run bash ./tools/deploy.sh --dry-run (at the root of the project) locally and passed
• NEW: I have run bash ./tools/test.sh (at the root of the project) locally and passed
• I have tested this feature in the browser GH Actions: https://github.com/GriceTurrble/galenrice.com/actions/runs/2853472558

Test Configuration

• Browser type & version:
• Operating system:
• Ruby version:
• Bundler version:
• Jekyll version:

Checklist

• I have performed a self-review of my code
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

[GriceTurrble]

I think configure pages portion of the CI is failing, since this particular repo does not build out to a GitHub Pages site, no?

[cotes2020]

I think configure pages portion of the CI is failing, since this particular repo does not build out to a GitHub Pages site, no?

Yes, it seems that the project still needs to use test.sh in CI to avoid this problem