Bump quartz from 9a599ae to 660aae6 (#56)

Bumps [quartz](https://github.com/jackyzha0/quartz) from `9a599ae` to `660aae6`.
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<li><a href="https://github.com/jackyzha0/quartz/commit/660aae62e09ea1f5ec957149b78bfd01a85bd79f"><code>660aae6</code></a> docs: add Imk&amp;Cc's homepage to showcase.md (<a href="https://redirect.github.com/jackyzha0/quartz/issues/595">#595</a>)</li>
<li>See full diff in <a href="https://github.com/jackyzha0/quartz/compare/9a599aebeada7f95170dac98c3f30023d9e7453f...660aae62e09ea1f5ec957149b78bfd01a85bd79f">compare view</a></li>
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