Bump voku/html-min from 3.0.6 to 3.1.3

[dependabot-preview[bot]]

Bumps voku/html-min from 3.0.6 to 3.1.3.

Changelog

*Sourced from [voku/html-min's changelog](https://github.com/voku/HtmlMin/blob/master/CHANGELOG.md).* > # Changelog 3.1.1 / 3.1.2 / 3.1.3 > > - use new version of "voku/simple_html_dom" > > > # Changelog 3.1.0 > > - add "HtmlMinDomObserverInterface" (+ HtmlMin as Observable) > - use phpcs fixer

Commits

- [`12f6e07`](https://github.com/voku/HtmlMin/commit/12f6e07aaee4439446fb47fd07ae2c1ca3e1342e) [*]: update the changelog - [`b9d03f0`](https://github.com/voku/HtmlMin/commit/b9d03f0aa9563b55cd41c63ba18fafd3c26438b4) [+]: update "voku/simple_html_dom" - [`f863b31`](https://github.com/voku/HtmlMin/commit/f863b31be37bb36f01e7a58fb2364fe67fcbb381) [*]: update the changelog - [`be34e5a`](https://github.com/voku/HtmlMin/commit/be34e5a9ebe82bb2b70ab6991153ada709ad3264) [*]: update the changelog - [`7f886e4`](https://github.com/voku/HtmlMin/commit/7f886e4622efc5c782257d34d919b43027eaea65) [+]: use new version of "voku/simple_html_dom" - [`8031ec4`](https://github.com/voku/HtmlMin/commit/8031ec46a08e8d7ee0dcb5c7edd426c914d5385c) [*]: update the changelog - [`6676dd3`](https://github.com/voku/HtmlMin/commit/6676dd3a6828656c88d3a908bd7e498bc2cc50a9) [+]: add "HtmlMinDomObserverInterface" (+ HtmlMin as Observable) - [`3a7ed19`](https://github.com/voku/HtmlMin/commit/3a7ed196d8642c5733ac63bc63749ca79eb21e6f) Merge pull request [#24](https://github-redirect.dependabot.com/voku/HtmlMin/issues/24) from voku/dependabot/composer/phpunit/phpunit-approx-6... - [`c0654ec`](https://github.com/voku/HtmlMin/commit/c0654ec071de2cd1be893dd7f7c4b181d79a1484) Update phpunit/phpunit requirement from ~6.0 to ~6.0 || ~7.0 - [`5e1e324`](https://github.com/voku/HtmlMin/commit/5e1e3244b0924cd14ea3a2f8038b602ecd5ed37e) Update README.md - See full diff in [compare view](https://github.com/voku/HtmlMin/compare/3.0.6...3.1.3)

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[dependabot-preview[bot]]

Looks like voku/html-min is up-to-date now, so this is no longer needed.