Bump oauth2 from 1.0.1 to 2.0.0

Bumps [oauth2](https://github.com/scrogson/oauth2) from 1.0.1 to 2.0.0.
- [Release notes](https://github.com/scrogson/oauth2/releases)
- [Changelog](https://github.com/scrogson/oauth2/blob/master/CHANGELOG.md)
- [Commits](ueberauth/oauth2@v1.0.1...v2.0.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

mix.exs

@@ -53,7 +53,7 @@ defmodule OpensourceChallenge.Mixfile do
       {:canary, "~> 1.1.0"},
       {:gettext, "~> 0.11"},
       {:plug_cowboy, "~> 2.0"},
-      {:oauth2, "~> 1.0"},
+      {:oauth2, "~> 2.0"},
       {:cors_plug, "~> 2.0.0"},
       {:coverex, "~> 1.5.0", only: :test}
     ]

mix.lock

@@ -29,7 +29,7 @@
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm"},
   "mime": {:hex, :mime, "1.3.1", "30ce04ab3175b6ad0bdce0035cba77bba68b813d523d1aac73d9781b4d193cf8", [:mix], [], "hexpm"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm"},
-  "oauth2": {:hex, :oauth2, "1.0.1", "2a116de7863d4b5a8a265d77e62b17a6f54e0c01a5bbbf02210783cb861e49ac", [:mix], [{:hackney, "~> 1.13", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
+  "oauth2": {:hex, :oauth2, "2.0.0", "338382079fe16c514420fa218b0903f8ad2d4bfc0ad0c9f988867dfa246731b0", [:mix], [{:hackney, "~> 1.13", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm"},
   "phoenix": {:hex, :phoenix, "1.4.10", "619e4a545505f562cd294df52294372d012823f4fd9d34a6657a8b242898c255", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:phoenix_pubsub, "~> 1.1", [hex: :phoenix_pubsub, repo: "hexpm", optional: false]}, {:plug, "~> 1.8.1 or ~> 1.9", [hex: :plug, repo: "hexpm", optional: false]}, {:plug_cowboy, "~> 1.0 or ~> 2.0", [hex: :plug_cowboy, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm"},
   "phoenix_ecto": {:hex, :phoenix_ecto, "3.6.0", "d65dbcedd6af568d8582dcd7da516c3051016bad51f9953e5337fea40bcd8a9d", [:mix], [{:ecto, "~> 2.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:phoenix_html, "~> 2.9", [hex: :phoenix_html, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},