fix: bump elixir version in buildpack (#364) · cesium/safira@709f30e

String.strip/1 is deprecated. Use String.trim/1 instead

unused alias Attendee

unused alias Auth

unused alias Multi

unused alias Repo

unused alias User

variable "scope" is unused (if the variable is not meant to be used, prefix it with an underscore)

variable "version" is unused (if the variable is not meant to be used, prefix it with an underscore)

Phoenix.Controller.render/4 is deprecated. render/4 is deprecated. Use put_view + render/3

Phoenix.Controller.render/4 is deprecated. render/4 is deprecated. Use put_view + render/3

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