[SLS-1581] Move yarn build into build script to fix version issue

[hghotra]

What does this PR do?

Currently, we run yarn build before we bump the version which results in the distributed zip to contain the outdated version number.

Motivation

47

Testing Guidelines

• Run release script locally (comment out actual release steps)
• Verify version number in package.json inside ./macro/*.zip

Additional Notes

Need to push a new release once this PR is merged.

Types of changes

• [x] Bug fix
• [ ] New feature
• [ ] Breaking change
• [ ] Misc (docs, refactoring, dependency upgrade, etc.)

Check all that apply

• [x] This PR's description is comprehensive
• [ ] This PR contains breaking changes that are documented in the description
• [ ] This PR introduces new APIs or parameters that are documented and unlikely to change in the foreseeable future
• [ ] This PR impacts documentation, and it has been updated (or a ticket has been logged)
• [ ] This PR's changes are covered by the automated tests
• [ ] This PR collects user input/sensitive content into Datadog