Bump ex_aws from 2.5.5 to 2.5.6

Bumps [ex_aws](https://github.com/ex-aws/ex_aws) from 2.5.5 to 2.5.6.
- [Release notes](https://github.com/ex-aws/ex_aws/releases)
- [Changelog](https://github.com/ex-aws/ex_aws/blob/v2.5.6/CHANGELOG.md)
- [Commits](ex-aws/ex_aws@v2.5.5...v2.5.6)

---
updated-dependencies:
- dependency-name: ex_aws
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

mix.lock

@@ -10,7 +10,7 @@
   "dialyxir": {:hex, :dialyxir, "1.4.3", "edd0124f358f0b9e95bfe53a9fcf806d615d8f838e2202a9f430d59566b6b53b", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "bf2cfb75cd5c5006bec30141b131663299c661a864ec7fbbc72dfa557487a986"},
   "ehmon": {:git, "https://github.com/mbta/ehmon.git", "1fb603262bd02d74a16183bd8f344dcace9d7561", []},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
-  "ex_aws": {:hex, :ex_aws, "2.5.5", "5dc378eff99c3c46c917b7a96a75ad0d4c300ab7250df668d0819bcd18c0213d", [:mix], [{:configparser_ex, "~> 4.0", [hex: :configparser_ex, repo: "hexpm", optional: true]}, {:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: true]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: true]}, {:jsx, "~> 2.8 or ~> 3.0", [hex: :jsx, repo: "hexpm", optional: true]}, {:mime, "~> 1.2 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:req, "~> 0.3", [hex: :req, repo: "hexpm", optional: true]}, {:sweet_xml, "~> 0.7", [hex: :sweet_xml, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "ed7ee39c56012c56600e021953c6487ecce9c49320ec3b4655a15d785f221ca6"},
+  "ex_aws": {:hex, :ex_aws, "2.5.6", "6f642e0f82eff10a9b470044f084b81a791cf15b393d647ea5f3e65da2794e3d", [:mix], [{:configparser_ex, "~> 4.0", [hex: :configparser_ex, repo: "hexpm", optional: true]}, {:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: true]}, {:jason, "~> 1.1", [hex: :jason, repo: "hexpm", optional: true]}, {:jsx, "~> 2.8 or ~> 3.0", [hex: :jsx, repo: "hexpm", optional: true]}, {:mime, "~> 1.2 or ~> 2.0", [hex: :mime, repo: "hexpm", optional: false]}, {:req, "~> 0.3", [hex: :req, repo: "hexpm", optional: true]}, {:sweet_xml, "~> 0.7", [hex: :sweet_xml, repo: "hexpm", optional: true]}, {:telemetry, "~> 0.4.3 or ~> 1.0", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "c69eec59e31fdd89d0beeb1d97e16518dd1b23ad95b3d5c9f1dcfec23d97f960"},
   "ex_aws_s3": {:hex, :ex_aws_s3, "2.5.4", "87aaf4a2f24a48f516d7f5aaced9d128dd5d0f655c4431f9037a11a85c71109c", [:mix], [{:ex_aws, "~> 2.0", [hex: :ex_aws, repo: "hexpm", optional: false]}, {:sweet_xml, ">= 0.0.0", [hex: :sweet_xml, repo: "hexpm", optional: true]}], "hexpm", "c06e7f68b33f7c0acba1361dbd951c79661a28f85aa2e0582990fccca4425355"},
   "expo": {:hex, :expo, "0.4.0", "bbe4bf455e2eb2ebd2f1e7d83530ce50fb9990eb88fc47855c515bfdf1c6626f", [:mix], [], "hexpm", "a8ed1683ec8b7c7fa53fd7a41b2c6935f539168a6bb0616d7fd6b58a36f3abf2"},
   "gen_stage": {:hex, :gen_stage, "1.2.1", "19d8b5e9a5996d813b8245338a28246307fd8b9c99d1237de199d21efc4c76a1", [:mix], [], "hexpm", "83e8be657fa05b992ffa6ac1e3af6d57aa50aace8f691fcf696ff02f8335b001"},