security/step-cli: Update 0.29.0 => 0.30.2

Changelog:
https://github.com/smallstep/cli/blob/v0.30.2/CHANGELOG.md

Improve port:

• Replace PORTVERSION with DISTVERSION.
• Merge MKDIRs.
• Replace CPs with INSTALL_DATA.
• Split long lines.

PR: 295799
Sponsored by: UNIS Labs
Co-authored-by: Vladimir Druzenko <vvd@FreeBSD.org>