chore(release): 4.1.0 [skip ci]

# [4.1.0](https://gitlab.com/to-be-continuous/helmfile/compare/4.0.1...4.1.0) (2025-12-31)

### Features

* add namespace auto-creation support ([49fc0620](https://gitlab.com/to-be-continuous/helmfile/commit/49fc0620b6422321e53ab08505225995c10d3211))