Bump spandex from 3.0.3 to 3.1.0

Bumps [spandex](https://github.com/spandex-project/spandex) from 3.0.3 to 3.1.0.
- [Release notes](https://github.com/spandex-project/spandex/releases)
- [Changelog](https://github.com/spandex-project/spandex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/spandex-project/spandex/compare/3.0.3...3.1.0)

---
updated-dependencies:
- dependency-name: spandex
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

mix.lock

@@ -112,7 +112,7 @@
   "remote_ip": {:hex, :remote_ip, "1.0.0", "3d7fb45204a5704443f480cee9515e464997f52c35e0a60b6ece1f81484067ae", [:mix], [{:combine, "~> 0.10", [hex: :combine, repo: "hexpm", optional: false]}, {:plug, "~> 1.10", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "9e9fcad4e50c43b5234bb6a9629ed6ab223f3ed07147bd35470e4ee5c8caf907"},
   "rustler": {:hex, :rustler, "0.24.0", "b8362a2fee1c9d2c7373b0bfdc98f75bbc02864efcec50df173fe6c4f72d4cc4", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}, {:toml, "~> 0.6", [hex: :toml, repo: "hexpm", optional: false]}], "hexpm", "2773167fca68a6525822ad977b41368ea3c2af876c42ebaa7c9d6bb69b67f1ce"},
   "sobelow": {:hex, :sobelow, "0.11.1", "23438964486f8112b41e743bbfd402da3e5b296fdc9eacab29914b79c48916dd", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "9897363a7eff96f4809304a90aad819e2ad5e5d24db547af502885146746a53c"},
-  "spandex": {:hex, :spandex, "3.0.3", "91aa318f3de696bb4d931adf65f7ebdbe5df25cccce1fe8fd376a44c46bcf69b", [:mix], [{:decorator, "~> 1.2", [hex: :decorator, repo: "hexpm", optional: true]}, {:optimal, "~> 0.3.3", [hex: :optimal, repo: "hexpm", optional: false]}, {:plug, ">= 1.0.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "e3e6c319d0ab478ddc9a39102a727a410c962b4d51c0932c72279b86d3b17044"},
+  "spandex": {:hex, :spandex, "3.1.0", "e43df29af70f6f0c13ddd07a5e68650e13dd2a76c6215977c651e64412e8ebee", [:mix], [{:decorator, "~> 1.2", [hex: :decorator, repo: "hexpm", optional: true]}, {:optimal, "~> 0.3.3", [hex: :optimal, repo: "hexpm", optional: false]}, {:plug, ">= 1.0.0", [hex: :plug, repo: "hexpm", optional: false]}], "hexpm", "6b053ab307856e34237f06a5ea931eeadf78bdd6f00a49bbfb4103e004a3d3c7"},
   "spandex_datadog": {:hex, :spandex_datadog, "1.1.0", "8c84e2f6c4067edc2e920dd79242f7bb0d6403652a7e9bc42109007f76b9be25", [:mix], [{:msgpax, "~> 2.2.1", [hex: :msgpax, repo: "hexpm", optional: false]}, {:spandex, "~> 3.0", [hex: :spandex, repo: "hexpm", optional: false]}, {:telemetry, "~> 0.4", [hex: :telemetry, repo: "hexpm", optional: false]}], "hexpm", "f4c20d3e601cad869705d9789f17a9242f245ce0bf2579fc835e96a6834663e2"},
   "spandex_ecto": {:hex, :spandex_ecto, "0.6.2", "845e0e0a115e84c218015e8a13cca7adb38e8b0a1b45010a51451a8c9961c551", [:mix], [{:spandex, "~> 2.2 or ~> 3.0", [hex: :spandex, repo: "hexpm", optional: false]}], "hexpm", "ddeb5c279ca850a38eee6decc8f91b3f4929c76f141b3329293793be54d0c1c7"},
   "spandex_phoenix": {:hex, :spandex_phoenix, "1.0.5", "6bb632d3b8157bbbdac97e03aca6dc3b2afd115b6d015fc8206b009685cd3b27", [:mix], [{:plug, "~> 1.3", [hex: :plug, repo: "hexpm", optional: false]}, {:spandex, "~> 2.2 or ~> 3.0", [hex: :spandex, repo: "hexpm", optional: false]}], "hexpm", "f7bcd063fed9eb140373603f8a7340b71e219e3f62824c2c7571036f47e2ac3c"},