chore(release): 4.0.0 [skip ci]

# [4.0.0](https://gitlab.com/to-be-continuous/helm/compare/3.3.2...4.0.0) (2023-01-11)

### Bug Fixes

* check chart is present locally on publish job ([8cabd719](https://gitlab.com/to-be-continuous/helm/commit/8cabd719a222f688657357474f548af9fcb51a92))

### Code Refactoring

* remove old variables and values ([928c6443](https://gitlab.com/to-be-continuous/helm/commit/928c64433e5d32dab341d9217f86497871e26237))

### Features

* environments activation is now opt-in ([64a0a2f7](https://gitlab.com/to-be-continuous/helm/commit/64a0a2f703432485a9269138004db0ee433bdea4))
* **package:** support publish snapshot (untested) version ([ed861d9e](https://gitlab.com/to-be-continuous/helm/commit/ed861d9e2fcd0462037b2db333aec9e0aac7f678))
* semrel integration no longer increases the app version ([698111e6](https://gitlab.com/to-be-continuous/helm/commit/698111e61f52a3f21fa9699c26e005a601af7734))
* support OCI-based registry as pull repos & support user/password authentication ([7ea406aa](https://gitlab.com/to-be-continuous/helm/commit/7ea406aad0e2c7817950f08a74be3ecb52afd8ca))
* support various publish methods (push, post, put, custom) with auto detection ([676c41cb](https://gitlab.com/to-be-continuous/helm/commit/676c41cb30a40899324a1610cc7bb915ffc38b5a))

### BREAKING CHANGES

* HELM_xxx_DISABLED variables no longer supported to enable/disable environments (see doc)
* default publish URL uses GitLab registry
* former dynamic variables $env and $appname removed: use $environment_type and $environment_name instead
* former dynamic value {{env}} removed: use {{environment_type}} instead