chore(deps): bump nixpkgs from 7aaa00e to 68a8af9 (#4)

Bumps [nixpkgs](https://github.com/NixOS/nixpkgs) from `7aaa00e` to
`68a8af9`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/68a8af93ff4297686cb68880845e61e5e2e41d92"><code>68a8af9</code></a>
beekeeper-studio: 5.6.5 -&gt; 5.7.2 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517437">#517437</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/5802aca1627e0d44329091bac1a77ca3b81ef863"><code>5802aca</code></a>
python3Packages.faiss-cpu: init 1.14.1 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517463">#517463</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/c6f32d9e089ab6aa901319ade0af9d1f3d54c637"><code>c6f32d9</code></a>
python3Packages.django-rich: init at 2.2.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517459">#517459</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/7e9055bbf908b5aedcbd809b09c9316e5f53ee9d"><code>7e9055b</code></a>
homebridge: 1.11.4 -&gt; 2.0.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/516694">#516694</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/4046f56015ff821b8a1aac7178a27b8432cc09b6"><code>4046f56</code></a>
mediamtx: 1.18.0 -&gt; 1.18.1 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/516766">#516766</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/81b795e86e6ee29b6d6ae529d27a5dc65487a016"><code>81b795e</code></a>
age-plugin-openpgp-card: 0.1.1 -&gt; 0.1.2 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517487">#517487</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/9aadacd95d6ddc75d60bdf8d1282551ccae9862f"><code>9aadacd</code></a>
liteparse: 1.5.2 -&gt; 1.5.3 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517338">#517338</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/08383653156cc6cb5f3c477287dd54f661fbfbba"><code>0838365</code></a>
better-commits: 1.21.0 -&gt; 1.23.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517168">#517168</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/8c2d55237cfe2c8e0e6fd84c53e69beefaf23455"><code>8c2d552</code></a>
nxdumpclient: change description (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/517498">#517498</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/6d862671833ee7abcd76534e3b24809eaa77b5ef"><code>6d86267</code></a>
nxdumpclient: change description</li>
<li>Additional commits viewable in <a
href="https://github.com/NixOS/nixpkgs/compare/7aaa00e7cc9be6c316cb5f6617bd740dd435c59d...68a8af93ff4297686cb68880845e61e5e2e41d92">compare
view</a></li>
</ul>
</details>
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