[straight-plugin] 1.4.0_p1 version bump

Closes #779.

Package-Manager: portage-2.1.11.55
Manifest-Sign-Key: C0174749
Merge branch 'feat/bumps'

* feat/bumps:
  [straight-plugin] 1.4.0_p1 version bump

Conflicts:
	support/stabilisation.rem