sysutils/helmfile: Update 1.1.2 => 1.2.3

Changelogs:
https://github.com/helmfile/helmfile/releases/tag/v1.1.3
https://github.com/helmfile/helmfile/releases/tag/v1.1.4
https://github.com/helmfile/helmfile/releases/tag/v1.1.5
https://github.com/helmfile/helmfile/releases/tag/v1.1.6
https://github.com/helmfile/helmfile/releases/tag/v1.1.7
https://github.com/helmfile/helmfile/releases/tag/v1.1.8
https://github.com/helmfile/helmfile/releases/tag/v1.1.9
https://github.com/helmfile/helmfile/releases/tag/v1.2.0
https://github.com/helmfile/helmfile/releases/tag/v1.2.1
https://github.com/helmfile/helmfile/releases/tag/v1.2.2
https://github.com/helmfile/helmfile/releases/tag/v1.2.3

While here replace PORTVERSION with DISTVERSION in GO_BUILDFLAGS.

PR: 291956