Auto merge of #26748 - servo:dependabot/cargo/gfx-backend-dx12-0.5.4, r=jdm

Bump gfx-backend-dx12 from 0.5.3 to 0.5.4

Bumps [gfx-backend-dx12](https://github.com/gfx-rs/gfx) from 0.5.3 to 0.5.4.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/gfx-rs/gfx/blob/master/CHANGELOG.md">gfx-backend-dx12's changelog</a>.</em></p>
<blockquote>
<h3>backend-dx12-0.5.4 (29-05-2020)</h3>
<ul>
<li>fix detection of integrated gpus</li>
<li>fix UB in <code>compile_shader</code></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a href="https://github.com/gfx-rs/gfx/commits">compare view</a></li>
</ul>
</details>
<br />

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Cargo.lock

@@ -1834,9 +1834,9 @@ dependencies = [
 
 [[package]]
 name = "gfx-backend-dx12"
-version = "0.5.3"
+version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37365e2927d55cefac0d3f78dfd1d3119fbb13a8bd7afe2409d729961fee22fc"
+checksum = "69af46bd4fc5479cc7d90bf77ccee0da5dd88d4d27b87986a582f9eec97d02d4"
 dependencies = [
  "bitflags",
  "d3d12",