chore(deps): Bump subst from 0.3.0 to 0.3.1 (#1367)

Bumps [subst](https://github.com/fizyr/subst) from 0.3.0 to 0.3.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/fizyr/subst/blob/main/CHANGELOG">subst's
changelog</a>.</em></p>
<blockquote>
<h1>Version 0.3.1 - 2024-06-09</h1>
<ul>
<li>[fix][minor] Fix recursive substitution in braced default
values.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="aee45ad344"><code>aee45ad</code></a>
Bump version to 0.3.1.</li>
<li><a
href="091d59717d"><code>091d597</code></a>
Update CHANGELOG.</li>
<li><a
href="58ef80fb9d"><code>58ef80f</code></a>
Add more tests for recursive substitution in default values.</li>
<li><a
href="476997bd40"><code>476997b</code></a>
fix: Allow recursive substitution of braced variables</li>
<li><a
href="ce74b13a58"><code>ce74b13</code></a>
Merge pull request <a
href="https://redirect.github.com/fizyr/subst/issues/10">#10</a> from
nyurik/linting</li>
<li><a
href="2a100f4f17"><code>2a100f4</code></a>
Expand match on YAML value again.</li>
<li><a
href="4b75931a42"><code>4b75931</code></a>
Address PR review feedback</li>
<li><a
href="9abed1f816"><code>9abed1f</code></a>
Some linting and minor upgrades</li>
<li><a
href="fa37c2e4e7"><code>fa37c2e</code></a>
Merge pull request <a
href="https://redirect.github.com/fizyr/subst/issues/13">#13</a> from
cre4ture/fix/cargo_fmt</li>
<li><a
href="783e5ae366"><code>783e5ae</code></a>
cargo fmt with exceptions for relevant tests and yaml.rs parts</li>
<li>See full diff in <a
href="https://github.com/fizyr/subst/compare/v0.3.0...v0.3.1">compare
view</a></li>
</ul>
</details>
<br />


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Cargo.lock

@@ -4267,9 +4267,9 @@ dependencies = [
 
 [[package]]
 name = "subst"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ca1318e5d6716d6541696727c88d9b8dfc8cfe6afd6908e186546fd4af7f5b98"
+checksum = "914a3487c294386d731fd33a8116b3ae4a8f95c0976b1550cc6b59b3db6c1e26"
 dependencies = [
  "memchr",
  "serde",