feat: allow fail-fast as an input argument

[damienwebdev]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/graycoreio/github-actions-magento2/blob/main/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

Currently, we fail-fast during builds which can be annoying when you're trying to fix multiple versions at the same time and you have to run the build frequently to know what is wrong with each version.

Fixes: N/A

What is the new behavior?

We still fail-fast, but users can change the behavior.

Does this PR introduce a breaking change?

• Yes
• No

Other information