Use arc-runners for build-and-test workflow

[iambrianchan]

trafficstars

What does this PR do?

Uses self hosted arc runners for the build-and-test workflow.

These changes will impact:

• [ ] commenters
• [ ] moderators
• [ ] admins
• [x] developers

What changes to the GraphQL/Database Schema does this PR introduce?

None

Does this PR introduce any new environment variables or feature flags?

None

If any indexes were added, were they added to INDEXES.md?

N/A

How do I test this PR?

Run the build-and-test workflow

Where any tests migrated to React Testing Library?

N/A

How do we deploy this PR?

Merge the PR and observe future branches using arc-runners

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