chore(release): 1.4.0 [skip ci]

# [1.4.0](v1.3.5...v1.4.0) (2021-03-31)

### Continuous Integration

* enable Vagrant-based testing using GitHub Actions ([a0306ce](a0306ce))
* **gemfile+lock:** use `ssf` customised `kitchen-docker` repo [skip ci] ([009dab4](009dab4))
* **kitchen+ci:** use latest pre-salted images (after CVE) [skip ci] ([e762a51](e762a51))
* **kitchen+gitlab-ci:** use latest pre-salted images [skip ci] ([daa4c9e](daa4c9e))
* **pre-commit:** update hook for `rubocop` [skip ci] ([08332f5](08332f5))

### Features

* **composer:** make dependencies configurable ([d727b15](d727b15))

### Tests

* **freebsd:** add specific tests for FreeBSD ([cb2758d](cb2758d))
* **pillar:** list PHP versions for FreeBSD 11.4/12.2 (using `7.4`) ([b876d6b](b876d6b))
* standardise use of `share` suite & `_mapdata` state [skip ci] ([bf6a758](bf6a758))
* **_mapdata:** add verification files for new platforms ([610cfee](610cfee))
* **share:** standardise with latest changes [skip ci] ([147c996](147c996))