chore(deps): update dependency mimic to v1.12.0 (#153)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [mimic](https://hex.pm/packages/mimic) ([source](https://github.com/edgurgel/mimic)) | dev | minor | `~> 2.0` -> `~> 1.12` |

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### Release Notes

<details>
<summary>edgurgel/mimic (mimic)</summary>

### [`v1.12.0`](https://github.com/edgurgel/mimic/releases/tag/v1.12.0): Mimic 1.12.0

[Compare Source](edgurgel/mimic@v1.11.2...v1.12.0)

#### What's Changed

- Mimic.calls/3 to list args from each call by [@&#8203;brentjanderson](https://github.com/brentjanderson) in [#&#8203;94](edgurgel/mimic#94)

#### New Contributors

- [@&#8203;brentjanderson](https://github.com/brentjanderson) made their first contribution in [#&#8203;94](edgurgel/mimic#94)

**Full Changelog**: <edgurgel/mimic@v1.11.2...v1.12.0>

</details>

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Reviewed-on: https://harton.dev/james/wafer/pulls/153
Co-authored-by: Renovate Bot <bot@harton.nz>
Co-committed-by: Renovate Bot <bot@harton.nz>

Author: Renovate Bot

mix.exs

@@ -70,7 +70,7 @@ defmodule Wafer.MixProject do
       {:ex_check, "~> 0.16", devtest},
       {:ex_doc, ">= 0.0.0", devtest},
       {:git_ops, "~> 2.4", devtest},
-      {:mimic, "~> 2.0", only: :test},
+      {:mimic, "~> 1.12", only: :test},
       {:mix_audit, "~> 2.1", devtest}
     ]
   end