build(deps): bump thiserror from 1.0.53 to 1.0.56 (#1655)

Bumps [thiserror](https://github.com/dtolnay/thiserror) from 1.0.53 to
1.0.56.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/thiserror/releases">thiserror's
releases</a>.</em></p>
<blockquote>
<h2>1.0.56</h2>
<ul>
<li>Update proc-macro2 to fix caching issue when using a rustc-wrapper
such as sccache</li>
</ul>
<h2>1.0.55</h2>
<ul>
<li>Work around improperly cached build script result by sccache –
second attempt (<a
href="https://redirect.github.com/dtolnay/thiserror/issues/280">#280</a>)</li>
</ul>
<h2>1.0.54</h2>
<ul>
<li>Work around improperly cached build script result by sccache – first
attempt (<a
href="https://redirect.github.com/dtolnay/thiserror/issues/279">#279</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="77d0af46dd"><code>77d0af4</code></a>
Release 1.0.56</li>
<li><a
href="d4caabdb38"><code>d4caabd</code></a>
Pull in proc-macro2 sccache fix</li>
<li><a
href="6089273df5"><code>6089273</code></a>
Release 1.0.55</li>
<li><a
href="322a2ae5c9"><code>322a2ae</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/thiserror/issues/280">#280</a>
from dtolnay/depinfo</li>
<li><a
href="fd7d7a568c"><code>fd7d7a5</code></a>
Emit dep-info for probe.rs in case sccache needs it</li>
<li><a
href="447c328719"><code>447c328</code></a>
Release 1.0.54</li>
<li><a
href="4619db8644"><code>4619db8</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/thiserror/issues/279">#279</a>
from dtolnay/depinfo</li>
<li><a
href="7b53bff3e6"><code>7b53bff</code></a>
Make env-dep:RUSTC_BOOTSTRAP get listed in probe's dep-info</li>
<li><a
href="e0500add5e"><code>e0500ad</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/thiserror/issues/277">#277</a>
from dtolnay/nightlyci</li>
<li><a
href="48cea47164"><code>48cea47</code></a>
Make CI verify that error_generic_member_access works in latest
nightly</li>
<li>Additional commits viewable in <a
href="https://github.com/dtolnay/thiserror/compare/1.0.53...1.0.56">compare
view</a></li>
</ul>
</details>
<br />


[![Dependabot compatibility
score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=thiserror&package-manager=cargo&previous-version=1.0.53&new-version=1.0.56)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

Dependabot will resolve any conflicts with this PR as long as you don't
alter it yourself. You can also trigger a rebase manually by commenting
`@dependabot rebase`.

[//]: # (dependabot-automerge-start)
[//]: # (dependabot-automerge-end)

---

<details>
<summary>Dependabot commands and options</summary>
<br />

You can trigger Dependabot actions by commenting on this PR:
- `@dependabot rebase` will rebase this PR
- `@dependabot recreate` will recreate this PR, overwriting any edits
that have been made to it
- `@dependabot merge` will merge this PR after your CI passes on it
- `@dependabot squash and merge` will squash and merge this PR after
your CI passes on it
- `@dependabot cancel merge` will cancel a previously requested merge
and block automerging
- `@dependabot reopen` will reopen this PR if it is closed
- `@dependabot close` will close this PR and stop Dependabot recreating
it. You can achieve the same result by closing it manually
- `@dependabot show <dependency name> ignore conditions` will show all
of the ignore conditions of the specified dependency
- `@dependabot ignore this major version` will close this PR and stop
Dependabot creating any more for this major version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this minor version` will close this PR and stop
Dependabot creating any more for this minor version (unless you reopen
the PR or upgrade to it yourself)
- `@dependabot ignore this dependency` will close this PR and stop
Dependabot creating any more for this dependency (unless you reopen the
PR or upgrade to it yourself)


</details>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/exercises/Cargo.toml

@@ -15,7 +15,7 @@ path = "concurrency/link-checker.rs"
 [dependencies]
 reqwest = { version = "0.11.12", features = ["blocking"] }
 scraper = "0.18.0"
-thiserror = "1.0.53"
+thiserror = "1.0.56"
 
 [dev-dependencies]
 tempfile = "3.9.0"