Bump mpociot/laravel-apidoc-generator from 3.2.0 to 3.3.0 (koel#888)

Bumps [mpociot/laravel-apidoc-generator](https://github.com/mpociot/laravel-apidoc-generator) from 3.2.0 to 3.3.0.
<details>
<summary>Release notes</summary>

*Sourced from [mpociot/laravel-apidoc-generator's releases](https://github.com/mpociot/laravel-apidoc-generator/releases).*

> ## 3.3.0
> [Changelog](https://github.com/mpociot/laravel-apidoc-generator/blob/master/CHANGELOG.md#330---wednesday-2-january-2019)
</details>
<details>
<summary>Changelog</summary>

*Sourced from [mpociot/laravel-apidoc-generator's changelog](https://github.com/mpociot/laravel-apidoc-generator/blob/master/CHANGELOG.md).*

> ## [3.3.0] - Wednesday, 2 January 2019
> ### Added
> - Ability to replace json key values in response file (https://github-redirect.dependabot.com/mpociot/laravel-apidoc-generator/pull/434)
> - Support for custom transfer serializers (https://github-redirect.dependabot.com/mpociot/laravel-apidoc-generator/pull/441)
</details>
<details>
<summary>Commits</summary>

- [`20fdf98`](mpociot/laravel-apidoc-generator@20fdf98) Update CHANGELOG.md
- [`fb599ae`](mpociot/laravel-apidoc-generator@fb599ae) Merge pull request [koel#442](https://github-redirect.dependabot.com/mpociot/laravel-apidoc-generator/issues/442) from mpociot/analysis-qgrGeG
- [`236e877`](mpociot/laravel-apidoc-generator@236e877) Apply fixes from StyleCI
- [`0085188`](mpociot/laravel-apidoc-generator@0085188) Merge pull request [koel#441](https://github-redirect.dependabot.com/mpociot/laravel-apidoc-generator/issues/441) from lloricode/custom-serializer
- [`bf78d31`](mpociot/laravel-apidoc-generator@bf78d31) Update apidoc.php
- [`7dd614f`](mpociot/laravel-apidoc-generator@7dd614f) 👍 example
- [`a655125`](mpociot/laravel-apidoc-generator@a655125) 📚 more detail
- [`1e1c795`](mpociot/laravel-apidoc-generator@1e1c795) Merge branch 'master' of https://github.com/mpociot/laravel-apidoc-generator ...
- [`4c87b21`](mpociot/laravel-apidoc-generator@4c87b21) Update CONTRIBUTING.md
- [`1e02195`](mpociot/laravel-apidoc-generator@1e02195) Merge pull request [koel#440](https://github-redirect.dependabot.com/mpociot/laravel-apidoc-generator/issues/440) from lloricode/patch-1
- Additional commits viewable in [compare view](mpociot/laravel-apidoc-generator@3.2.0...3.3.0)
</details>
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