ci: convert linux tests for Node.js 20

[MikeMcC399]

• closes https://github.com/cypress-io/cypress-example-kitchensink/issues/857

Issue

The .circleci/config.yml workflow shows multiple EBADENGINE warnings.

The linux-build jobs in the workflows section are currently running under the Node.js default v18.16.1 from the Cypress CircleCI Orb. They need to run under Node.js 20.x to be compatible with currently configured dependencies.

Change

• Move the linux-build jobs in the workflows section to the jobs section
• Convert the jobs from using the Cypress Circle CI Orb job cypress/run to use instead the Cypress Circle CI Orb command cypress/run-tests.
• Add the following to the moved jobs:

  executor:
    name: cypress/default
    node-version: '20.13.1'

• Rename the jobs to align to the Windows and Mac jobs

[cypress-app-bot]

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.