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](https://github.com/thoughtbot/bamboo/compare/v1.1.0...v1.2.0)

mix.lock

@@ -6,7 +6,7 @@
   "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"},
   "argon2_elixir": {:hex, :argon2_elixir, "1.3.3", "487ffa071ef78c51d9b16e50ff3cf30cf8204e0aa4bdc8afd3765fdd8195e213", [:make, :mix], [{:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: false]}], "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"},
   "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm"},
@@ -47,7 +47,7 @@
   "gettext": {:hex, :gettext, "0.16.1", "e2130b25eebcbe02bb343b119a07ae2c7e28bd4b146c4a154da2ffb2b3507af2", [:mix], [], "hexpm"},
   "guardian": {:hex, :guardian, "1.2.1", "bdc8dd3dbf0fb7216cb6f91c11831faa1a64d39cdaed9a611e37f2413e584983", [:mix], [{:jose, "~> 1.8", [hex: :jose, repo: "hexpm", optional: false]}, {:phoenix, "~> 1.3", [hex: :phoenix, repo: "hexpm", optional: true]}, {:plug, "~> 1.3.3 or ~> 1.4", [hex: :plug, repo: "hexpm", optional: true]}], "hexpm"},
   "guardian_db": {:hex, :guardian_db, "1.1.0", "45ab94206cce38f7443dc27de6dc52966ccbdeff65ca1b1f11a6d8f3daceb556", [:mix], [{:ecto, "~> 2.2", [hex: :ecto, repo: "hexpm", optional: false]}, {:guardian, "~> 1.0", [hex: :guardian, repo: "hexpm", optional: false]}, {:postgrex, "~> 0.13", [hex: :postgrex, repo: "hexpm", optional: true]}], "hexpm"},
-  "hackney": {:hex, :hackney, "1.14.3", "b5f6f5dcc4f1fba340762738759209e21914516df6be440d85772542d4a5e412", [:rebar3], [{:certifi, "2.4.2", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
+  "hackney": {:hex, :hackney, "1.15.0", "287a5d2304d516f63e56c469511c42b016423bcb167e61b611f6bad47e3ca60e", [:rebar3], [{:certifi, "2.4.2", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "1.0.2", [hex: :mimerl, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.4", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm"},
   "http_sign": {:hex, :http_sign, "0.1.1", "b16edb83aa282892f3271f9a048c155e772bf36e15700ab93901484c55f8dd10", [:mix], [{:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm"},
   "httpoison": {:hex, :httpoison, "1.4.0", "e0b3c2ad6fa573134e42194d13e925acfa8f89d138bc621ffb7b1989e6d22e73", [:mix], [{:hackney, "~> 1.8", [hex: :hackney, repo: "hexpm", optional: false]}], "hexpm"},
   "icalendar": {:hex, :icalendar, "0.7.0", "6acf28c7e38ad1c4515c59e336878fb78bb646c8aa70d2ee3786ea194711a7b7", [:mix], [{:timex, "~> 3.0", [hex: :timex, repo: "hexpm", optional: false]}], "hexpm"},