chore(release): 2.6.0 [skip ci]

# [2.6.0](v2.5.0...v2.6.0) (2021-09-10)

### Features

* improve encryption of table to skip existing and prevent race condition([#6](https://git.customd.com/composer/eloquent-model-encrypt/issues/6)) ([e963f229](e963f229))