Run vitest using bun runtime

Summary

Use the bun runtime to run vitest commands.

Additionally, we MIGHT remove the nodejs binary setup from the Dockerfile: https://gitlab.com/ss-open/websites/personal/-/blob/98947c7bf3a8405462ba55726617eb61d1413b8f/Dockerfile#L2-5

An another solution COULD be to move to bun:test, however, we will lose the "out of the box" configuration of vite and will have to tricks the configuration to make bun:test understanding the vite ecosystem.

Additional context

Currently not working. See the following discussion for details:

• @soullivaneuh started a discussion: (+3 comments)

  BUG: The test CI job is looping indefinitely

  Ref: https://gitlab.com/ss-open/websites/personal/-/jobs/5861252343

  The problem can be reproduced on local:

  export COMPOSE_FILE=docker-compose.yml:docker-compose.ci.yml
  podman compose build
  podman compose run test

  Output:

  $ vitest run --coverage
  
   RUN  v1.1.0 /app
        Coverage enabled with istanbul
  
  [bun] Warning: worker_threads.Worker option "argv" is not implemented.
  [bun] Warning: worker_threads.Worker option "execArgv" is not implemented.
  [bun] Warning: worker_threads.Worker option "resourceLimits" is not implemented.
  ...

  It MAY be related to the threads usage of vitest that looks to not work out of the box with Docker. To be investigated.

  Ref: https://vitest.dev/guide/features#threads