Bump the mix group with 2 updates - #320

"xref: [exclude: ...]" in your mix.exs file is deprecated, instead use: "elixirc_options: [no_warn_undefined: ...]"

"xref: [exclude: ...]" in your mix.exs file is deprecated, instead use: "elixirc_options: [no_warn_undefined: ...]"

"xref: [exclude: ...]" in your mix.exs file is deprecated, instead use: "elixirc_options: [no_warn_undefined: ...]"

first..last inside match is deprecated, you must always match on the step: first..last//var or first..last//_ if you want to ignore it

the Behaviour module is deprecated. Instead of using this module, use the @callback and @macrocallback module attributes. See the documentation for Module for more information on these attributes

"xref: [exclude: ...]" in your mix.exs file is deprecated, instead use: "elixirc_options: [no_warn_undefined: ...]"

"xref: [exclude: ...]" in your mix.exs file is deprecated, instead use: "elixirc_options: [no_warn_undefined: ...]"

"xref: [exclude: ...]" in your mix.exs file is deprecated, instead use: "elixirc_options: [no_warn_undefined: ...]"

first..last inside match is deprecated, you must always match on the step: first..last//var or first..last//_ if you want to ignore it