chore(deps): bump bamboo from 1.3.0 to 2.1.0

Bumps [bamboo](https://github.com/thoughtbot/bamboo) from 1.3.0 to 2.1.0.
- [Release notes](https://github.com/thoughtbot/bamboo/releases)
- [Changelog](https://github.com/thoughtbot/bamboo/blob/master/CHANGELOG.md)
- [Commits](beam-community/bamboo@v1.3.0...v2.1.0)

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

Author: dependabot-preview[bot]

mix.exs

@@ -94,7 +94,7 @@ defmodule GroupherServer.Mixfile do
       {:recase, "~> 0.7.0"},
       {:nanoid, "~> 2.0.5"},
       # mailer
-      {:bamboo, "1.3.0"},
+      {:bamboo, "2.1.0"},
       # mem cache
       {:cachex, "3.3.0"},
       # postgres-backed job queue

mix.lock

@@ -5,7 +5,7 @@
   "accessible": {:hex, :accessible, "0.3.0", "932f6ade6ea839212fea1735ab4ffdc39a3843a622f2ea5d28f0ab41c14b4435", [:mix], [], "hexpm", "13a11b0611ab82f7b9098a88465b5674f729c02bd613216243c123c65f90f296"},
   "apollo_tracing": {:hex, :apollo_tracing, "0.4.4", "de945527568e3377409377f5ed39b2f57a02adfa0ff19c33b232d201f45b83a1", [:mix], [{:absinthe, "~> 1.4", [hex: :absinthe, repo: "hexpm", optional: false]}, {:absinthe_plug, "~> 1.4", [hex: :absinthe_plug, repo: "hexpm", optional: true]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: true]}], "hexpm", "9b6203b72ae582363fb5c9cabae6ed828276f2c54ee553fb11b9d5ab147db438"},
   "argon2_elixir": {:hex, :argon2_elixir, "1.2.14", "0fc4bfbc1b7e459954987d3d2f3836befd72d63f3a355e3978f5005dd6e80816", [], [{:elixir_make, "~> 0.4", [hex: :elixir_make, repo: "hexpm", optional: false]}], "hexpm"},
-  "bamboo": {:hex, :bamboo, "1.3.0", "9ab7c054f1c3435464efcba939396c29c5e1b28f73c34e1f169e0881297a3141", [:mix], [{:hackney, ">= 1.13.0", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "e1197188512d4a4458eaaad9a1659ce9eeb54a1b41574a9cd7507217b33e0f3e"},
+  "bamboo": {:hex, :bamboo, "2.1.0", "3c58f862efd74fa8c8d48a410ac592b41f7d24785e828566f7a0af549269ddc3", [:mix], [{:hackney, ">= 1.15.2", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: true]}, {:mime, "~> 1.4", [hex: :mime, repo: "hexpm", optional: false]}, {:plug, "~> 1.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "f0ad2623b9a1d2dc06dcf289b59df9ebc522f49f3a21971ec87a8fce04e6d33e"},
   "base64url": {:hex, :base64url, "0.0.1", "36a90125f5948e3afd7be97662a1504b934dd5dac78451ca6e9abf85a10286be", [:rebar], [], "hexpm", "fab09b20e3f5db886725544cbcf875b8e73ec93363954eb8a1a9ed834aa8c1f9"},
   "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm", "7af5c7e09fe1d40f76c8e4f9dd2be7cebd83909f31fee7cd0e9eadc567da8353"},
   "cachex": {:hex, :cachex, "3.3.0", "6f2ebb8f27491fe39121bd207c78badc499214d76c695658b19d6079beeca5c2", [:mix], [{:eternal, "~> 1.2", [hex: :eternal, repo: "hexpm", optional: false]}, {:jumper, "~> 1.0", [hex: :jumper, repo: "hexpm", optional: false]}, {:sleeplocks, "~> 1.1", [hex: :sleeplocks, repo: "hexpm", optional: false]}, {:unsafe, "~> 1.0", [hex: :unsafe, repo: "hexpm", optional: false]}], "hexpm", "d90e5ee1dde14cef33f6b187af4335b88748b72b30c038969176cd4e6ccc31a1"},