Bump net-smtp from 0.5.0 to 0.5.1 (#4301)

Bumps [net-smtp](https://github.com/ruby/net-smtp) from 0.5.0 to 0.5.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/net-smtp/releases">net-smtp's
releases</a>.</em></p>
<blockquote>
<h2>v0.5.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Clarify the license of net-smtp by <a
href="https://github.com/tmtm"><code>@​tmtm</code></a> in <a
href="https://redirect.github.com/ruby/net-smtp/pull/85">ruby/net-smtp#85</a></li>
<li>Enabled windows-latest on GHA by <a
href="https://github.com/hsbt"><code>@​hsbt</code></a> in <a
href="https://redirect.github.com/ruby/net-smtp/pull/87">ruby/net-smtp#87</a></li>
<li>Fix typo in test methods by <a
href="https://github.com/tas50"><code>@​tas50</code></a> in <a
href="https://redirect.github.com/ruby/net-smtp/pull/89">ruby/net-smtp#89</a></li>
<li>Restore gemspec file to gem package by <a
href="https://github.com/hsbt"><code>@​hsbt</code></a> in <a
href="https://redirect.github.com/ruby/net-smtp/pull/90">ruby/net-smtp#90</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/tas50"><code>@​tas50</code></a> made
their first contribution in <a
href="https://redirect.github.com/ruby/net-smtp/pull/89">ruby/net-smtp#89</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/net-smtp/compare/v0.5.0...v0.5.1">https://github.com/ruby/net-smtp/compare/v0.5.0...v0.5.1</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/net-smtp/blob/master/NEWS.md">net-smtp's
changelog</a>.</em></p>
<blockquote>
<h1>NEWS</h1>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ruby/net-smtp/commit/a0075eb8a74910bd05566f0a208589263bce7597"><code>a0075eb</code></a>
Bump up v0.5.1</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/afaa2985504eaad7bfe522665c751aaf9415896e"><code>afaa298</code></a>
Merge pull request <a
href="https://redirect.github.com/ruby/net-smtp/issues/90">#90</a> from
ruby/restore-gemspec</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/d496a829f9b99adb44ecc1768c4d005e5f7b779e"><code>d496a82</code></a>
Resolve to wrong references in ruby/ruby repo</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/cfdcfe0ce2ebe1f3de60f1d311d264c6ebf32e18"><code>cfdcfe0</code></a>
Restore gemspec file to package because it's required by rbinstall.rb in
ruby...</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/53482b817f7c0be2d9bce4eae088c019f7ee0ac3"><code>53482b8</code></a>
Merge pull request <a
href="https://redirect.github.com/ruby/net-smtp/issues/89">#89</a> from
tas50/master</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/85da49ccc88ead58c7ad8a6de4f9e2a959deb09b"><code>85da49c</code></a>
Fix typo in test methods</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/fe2635b28404cc5eeda9db48bec841a19c930b26"><code>fe2635b</code></a>
Merge pull request <a
href="https://redirect.github.com/ruby/net-smtp/issues/87">#87</a> from
ruby/enable-windows-test</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/38f0e367631abd1404d4a7e5726c61bfb048c168"><code>38f0e36</code></a>
Exclude Ruby 2.6 and 2.7 from Windows CI</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/76db00b5b5a9b6e3b44d608935313fa085ce9281"><code>76db00b</code></a>
Handle Errno::ECONNABORTED on Windows platform</li>
<li><a
href="https://github.com/ruby/net-smtp/commit/265823a71766ba0886ad79c57c9dbbbfa9f86259"><code>265823a</code></a>
Enabled windows-latest on GHA</li>
<li>Additional commits viewable in <a
href="https://github.com/ruby/net-smtp/compare/v0.5.0...v0.5.1">compare
view</a></li>
</ul>
</details>
<br />


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Author: dependabot[bot]

Gemfile.lock

@@ -272,7 +272,7 @@ GEM
       net-protocol
     net-protocol (0.2.2)
       timeout
-    net-smtp (0.5.0)
+    net-smtp (0.5.1)
       net-protocol
     nio4r (2.7.4)
     nokogiri (1.18.2-arm64-darwin)