feat: add --parallel flag yarn test cmd

[jordaniza]

Description

Use HH tests in parallel by default by adding the flag to yarn test Also added yarn test:sequential for tests not using parallel

Increased the timeout to 90 seconds.

NOTE: some tests fail with PSP. This is unrelated to this PR and addressed in a separate PR.

Task ID: OS-1039

Type of cha

• [x] New feature (non-breaking change which adds functionality)

Checklist:

• [x] I have selected the correct base branch.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] My changes generate no new warnings.
• [ ] Any dependent changes have been merged and published in downstream modules.
• [x] I ran all tests with success and extended them if necessary. NO NEW TESTS BREAK.
• [ ] I have updated the CHANGELOG.md file in the root folder.
• [ ] I have updated the DEPLOYMENT_CHECKLIST file in the root folder.
• [ ] I have updated the UPDATE_CHECKLIST file in the root folder.