fix(scripts): update release PR and process

[shortcuts]

🧭 What and Why

🎟 JIRA Ticket: https://algolia.atlassian.net/browse/APIC-499

Changes included:

Follow up of #537

This PR contains a few tweaks about the previous update:

• Fix the zip issue on the CI, it contained circular references to symlinks created by workspaces
• Rename scripts to match the new process (issue -> PR)
• Automatically assign the team for review to a release PR
• Limit number of unknown commits to 15, as it was causing an issue when creating a PR via the REST API
• Update doc related to the release process

🧪 Test

• CI
• yarn release ran from this PR: chore: prepare release 2022-05-25 #553
  • You can test it locally by adding the LOCAL_TEST_DEV to your .env file

[netlify]

✅ Deploy Preview for api-clients-automation canceled.

Name	Link
🔨 Latest commit	5971351
🔍 Latest deploy log	https://app.netlify.com/sites/api-clients-automation/deploys/628e13454f41270008f0ae64

[algolia-bot]

✗ The generated branch has been deleted.

If the PR has been merged, you can check the generated code on the main branch.
You can still access the code generated on main via this commit.

[millotp]

nothing to add it's perfect !