[qa] chore/Migrate to Github actions from CircleCI

[susanssky]

This is a:

• ✨ New feature - new behaviour has been implemented
• 🐛 Bug fix - existing behaviour has been made to behave
• ♻️ Refactor - the behaviour has not changed, just the implementation
• ✅ Test backfill - tests for existing behaviour were added but the behaviour itself hasn't changed
• ⚙️ Chore - maintenance task, behaviour and implementation haven't changed

Description

• Purpose -

Migrate to Github actions from CircleCI because we don't need CircleCI

• How to check -

Before merging this PR, we can only check whether the jobs before the build job (on config.yml) properly.
It’s only after the PR is merged that we can check if the deploy job (on config.yml) works.

Links

https://github.com/CodeYourFuture/devops_team/issues/86

Author checklist

• I have written a title that reflects the relevant ticket
• I have written a description that says what the PR does and how to validate it
• I have linked to the project board ticket (and any related PRs/issues) in the Links section
• I have added a link to this PR to the ticket
• I have made the PR to qa from a branch named <category>/<name>, e.g. feature/edit-spaceships or bugfix/restore-oxygen
• I have completed the manual tests described here
• I have requested reviewers here and in my team chat channel

• I have spoken with my PM or TL about any parts of this task that may have become out-of-scope, or any additional improvements that I now realise may benefit my project
• I have added tests, or new tests were not required
• I have updated any documentation (e.g. diagrams, schemas), or documentation updates were not required