Bump bamboo from 1.1.0 to 1.2.0

Bumps [bamboo](https://github.com/thoughtbot/bamboo) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/thoughtbot/bamboo/releases)
- [Changelog](https://github.com/thoughtbot/bamboo/blob/master/CHANGELOG.md)
- [Commits](beam-community/bamboo@v1.1.0...v1.2.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

mix.lock

@@ -2,7 +2,7 @@
   "arc": {:hex, :arc, "0.11.0", "ac7a0cc03035317b6fef9fe94c97d7d9bd183a3e7ce1606aa0c175cfa8d1ba6d", [:mix], [{:ex_aws, "~> 2.0", [hex: :ex_aws, repo: "hexpm", optional: true]}, {:ex_aws_s3, "~> 2.0", [hex: :ex_aws_s3, repo: "hexpm", optional: true]}, {:hackney, "~> 1.0", [hex: :hackney, repo: "hexpm", optional: false]}, {:poison, "~> 2.2 or ~> 3.1", [hex: :poison, repo: "hexpm", optional: true]}, {:sweet_xml, "~> 0.6", [hex: :sweet_xml, repo: "hexpm", optional: true]}], "hexpm"},
   "arc_ecto": {:hex, :arc_ecto, "0.11.1", "27aedf8c236b2097eed09d96f4ae73b43eb4c042a0e2ae42d44bf644cf16115c", [:mix], [{:arc, "~> 0.11.0", [hex: :arc, repo: "hexpm", optional: false]}, {:ecto, "~> 2.1 or ~> 3.0", [hex: :ecto, repo: "hexpm", optional: false]}], "hexpm"},
   "artificery": {:hex, :artificery, "0.2.6", "f602909757263f7897130cbd006b0e40514a541b148d366ad65b89236b93497a", [:mix], [], "hexpm"},
-  "bamboo": {:hex, :bamboo, "1.1.0", "ecbdc851d0127d369957e5ca7bcfb4c7fe7dbfaf4fa0b2e5cc2493dd8a9a600e", [:mix], [{:hackney, ">= 1.13.0", [hex: :hackney, repo: "hexpm", optional: false]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}, {:poison, ">= 1.5.0", [hex: :poison, repo: "hexpm", optional: false]}], "hexpm"},
+  "bamboo": {:hex, :bamboo, "1.2.0", "8aebd24f7c606c32d0163c398004a11608ca1028182a169b2e527793bfab7561", [:mix], [{:hackney, ">= 1.13.0", [hex: :hackney, repo: "hexpm", optional: false]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}, {:poison, ">= 1.5.0", [hex: :poison, repo: "hexpm", optional: true]}], "hexpm"},
   "bamboo_smtp": {:hex, :bamboo_smtp, "1.6.0", "0a3607b77f22554af58c547350c1c73ebba6f4fb2c4bd0b11713ab5b4081588f", [:mix], [{:bamboo, "~> 1.0", [hex: :bamboo, repo: "hexpm", optional: false]}, {:gen_smtp, "~> 0.12.0", [hex: :gen_smtp, repo: "hexpm", optional: false]}], "hexpm"},
   "base64url": {:hex, :base64url, "0.0.1", "36a90125f5948e3afd7be97662a1504b934dd5dac78451ca6e9abf85a10286be", [:rebar], [], "hexpm"},
   "bcrypt_elixir": {:hex, :bcrypt_elixir, "1.1.1", "6b5560e47a02196ce5f0ab3f1d8265db79a23868c137e973b27afef928ed8006", [:make, :mix], [{:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm"},