build(deps): bump serde_json from 1.0.114 to 1.0.115 in /userspace/ksud (#1536)

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.114 to
1.0.115.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/serde-rs/json/releases">serde_json's
releases</a>.</em></p>
<blockquote>
<h2>v1.0.115</h2>
<ul>
<li>Documentation improvements</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="b1ebf3888e"><code>b1ebf38</code></a>
Release 1.0.115</li>
<li><a
href="c3dc153e06"><code>c3dc153</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1119">#1119</a>
from titaniumtraveler/pr</li>
<li><a
href="218770bb75"><code>218770b</code></a>
Explicitly install a Rust toolchain for cargo-outdated job</li>
<li><a
href="840da8e892"><code>840da8e</code></a>
Fix missing backticks in doc comments</li>
<li><a
href="3a3f61b1c9"><code>3a3f61b</code></a>
Temporarily disable miri on doctests</li>
<li><a
href="4a0be88b5a"><code>4a0be88</code></a>
Format regression tests with rustfmt</li>
<li><a
href="d2dbbf7055"><code>d2dbbf7</code></a>
Ignore dead code lint in tests</li>
<li><a
href="8e7b37bf7e"><code>8e7b37b</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1118">#1118</a>
from serde-rs/transparent</li>
<li><a
href="a25f6c6f2a"><code>a25f6c6</code></a>
Remove conditional on repr(transparent)</li>
<li><a
href="fedf8341ee"><code>fedf834</code></a>
Ignore non_local_definitions false positive in test</li>
<li>See full diff in <a
href="https://github.com/serde-rs/json/compare/v1.0.114...v1.0.115">compare
view</a></li>
</ul>
</details>
<br />


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userspace/ksud/Cargo.lock

@@ -1293,9 +1293,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.114"
+version = "1.0.115"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c5f09b1bd632ef549eaa9f60a1f8de742bdbc698e6cee2095fc84dde5f549ae0"
+checksum = "12dc5c46daa8e9fdf4f5e71b6cf9a53f2487da0e86e55808e2d35539666497dd"
 dependencies = [
  "itoa",
  "ryu",