chore(deps): bump nixpkgs from e9a7635 to 4df1b88 (#190)

Bumps [nixpkgs](https://github.com/NixOS/nixpkgs) from `e9a7635` to
`4df1b88`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/4df1b885d76a54e1aa1a318f8d16fd6005b6401f"><code>4df1b88</code></a>
phpantom-lsp: 0.7.0 -&gt; 0.8.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/522312">#522312</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/e7f47da556936d6f678a4324ff28dc889f5f447e"><code>e7f47da</code></a>
various: document <code>/dev/root</code> unavailability; provide
migration steps (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526310">#526310</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/817f08ea3d566264129ae78c0d4f609640704ff5"><code>817f08e</code></a>
docs/readme: link to release 26.05 on hydra (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526037">#526037</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/be64c70ff6d2b96ecc2fffd2170bf5daedb17b4e"><code>be64c70</code></a>
fabric-ai: 1.4.452 -&gt; 1.4.453 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526794">#526794</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/f0712d1576829ff33f8c4d74c0610457de359bc3"><code>f0712d1</code></a>
haskellPackages.warp: skip tests on darwin due to sandbox (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526369">#526369</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/af423aeed562074bd7dd3cd55f11f79c752f32c4"><code>af423ae</code></a>
wasm-tools: 1.250.0 -&gt; 1.251.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526775">#526775</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/08cbe27004c9575c614a3fba40b5085fdc0f0ca6"><code>08cbe27</code></a>
grpc-health-probe: 0.4.50 -&gt; 0.4.51 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526751">#526751</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/f0aa7d1b4098c5122c8d7cea1908594b50894979"><code>f0aa7d1</code></a>
rtk: 0.41.0 -&gt; 0.42.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526782">#526782</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/b4077bcd18ee37024befc707f00853eef945e46d"><code>b4077bc</code></a>
nixos/test-driver: add defaultText to pythonTestDriverPackage (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/509675">#509675</a>)</li>
<li><a
href="https://github.com/NixOS/nixpkgs/commit/ef0e1c42054b47409826303a3479ac9d998cfe8b"><code>ef0e1c4</code></a>
python3Packages.{httpcore2,httpx2}: 2.2.0 -&gt; 2.3.0 (<a
href="https://redirect.github.com/NixOS/nixpkgs/issues/526795">#526795</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/NixOS/nixpkgs/compare/e9a7635a57597d9754eccebdfc7045e6c8600e6b...4df1b885d76a54e1aa1a318f8d16fd6005b6401f">compare
view</a></li>
</ul>
</details>
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