Update version suffix to preview-08

[dianadiazbisbe]

Bumped the VersionSuffix property from preview-07 to preview-08 in Directory.Build.props.

Description

Updating version in Directory.Build.props

Motivation and Context

This way we can create a new version of ENMARCHA.

Type of change

Please check only those options that are relevant with a (✅).

• [✅] The code builds clean without any errors or warnings
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist

Please check all options from this checklist when validating your pull request with a (✅).

• [✅] My code follows the style guidelines of this project
• [✅] I have performed a self-review of my own code
• [✅] I have commented my code, particularly in hard-to-understand areas
• [✅] I have made corresponding changes to the documentation
• [✅] My changes generate no new warnings
• [✅] Any dependent changes have been merged and published in downstream modules
• [✅] I didn't break anyone 😄

[rliberoff]

LGTM