Bump rack from 3.1.15 to 3.1.16 (#412)

Bumps [rack](https://github.com/rack/rack) from 3.1.15 to 3.1.16.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rack/rack/blob/main/CHANGELOG.md">rack's
changelog</a>.</em></p>
<blockquote>
<h1>Changelog</h1>
<p>All notable changes to this project will be documented in this file.
For info on how to format all future additions to this file please
reference <a href="https://keepachangelog.com/en/1.0.0/">Keep A
Changelog</a>.</p>
<h2>Unreleased</h2>
<h3>SPEC Changes</h3>
<ul>
<li>Request environment keys must now be strings. <a
href="https://redirect.github.com/rack/rack/issues/2310">#2310</a>, [<a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a>])</li>
<li>Add <code>nil</code> as a valid return from a Response
<code>body.to_path</code> (<a
href="https://redirect.github.com/rack/rack/pull/2318">#2318</a>, [<a
href="https://github.com/MSP-Greg"><code>@​MSP-Greg</code></a>])</li>
</ul>
<h3>Added</h3>
<ul>
<li>Introduce <code>Rack::VERSION</code> constant. (<a
href="https://redirect.github.com/rack/rack/pull/2199">#2199</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
<li>ISO-2022-JP encoded parts within MIME Multipart sections of an HTTP
request body will now be converted to UTF-8. (<a
href="https://redirect.github.com/rack/rack/pull/2245">#2245</a>, <a
href="https://github.com/nappa"><code>@​nappa</code></a>)</li>
</ul>
<h3>Changed</h3>
<ul>
<li>Invalid cookie keys will now raise an error. (<a
href="https://redirect.github.com/rack/rack/pull/2193">#2193</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
<li><code>Rack::MediaType#params</code> now handles empty strings. (<a
href="https://redirect.github.com/rack/rack/pull/2229">#2229</a>, [<a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a>])</li>
<li>Avoid unnecessary calls to the <code>ip_filter</code> lambda to
evaluate <code>Request#ip</code> (<a
href="https://redirect.github.com/rack/rack/pull/2287">#2287</a>, [<a
href="https://github.com/willbryant"><code>@​willbryant</code></a>])</li>
<li>Only calculate <code>Request#ip</code> once per request (<a
href="https://redirect.github.com/rack/rack/pull/2292">#2292</a>, [<a
href="https://github.com/willbryant"><code>@​willbryant</code></a>])</li>
</ul>
<h3>Deprecated</h3>
<ul>
<li><code>Rack::Auth::AbstractRequest#request</code> is deprecated
without replacement. (<a
href="https://redirect.github.com/rack/rack/pull/2229">#2229</a>, [<a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a>])</li>
<li><code>Rack::Request#parse_multipart</code> (private method designed
to be overridden in subclasses) is deprecated without replacement. (<a
href="https://redirect.github.com/rack/rack/pull/2229">#2229</a>, [<a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a>])</li>
</ul>
<h3>Removed</h3>
<ul>
<li><code>Rack::Request#values_at</code> is removed. (<a
href="https://redirect.github.com/rack/rack/pull/2200">#2200</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
<li><code>Rack::Logger</code> is removed with no replacement. (<a
href="https://redirect.github.com/rack/rack/pull/2196">#2196</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
<li>Automatic cache invalidation in
<code>Rack::Request#{GET,POST}</code> has been removed. (<a
href="https://redirect.github.com/rack/rack/pull/2230">#2230</a>, [<a
href="https://github.com/jeremyevans"><code>@​jeremyevans</code></a>])</li>
<li>Support for <code>CGI::Cookie</code> has been removed. (<a
href="https://redirect.github.com/rack/rack/pull/2332">#2332</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
</ul>
<h3>Fixed</h3>
<ul>
<li><code>Rack::RewindableInput::Middleware</code> no longer wraps a nil
input. (<a
href="https://redirect.github.com/rack/rack/pull/2259">#2259</a>, <a
href="https://github.com/tt"><code>@​tt</code></a>)</li>
<li>Fix <code>NoMethodError</code> in
<code>Rack::Request#wrap_ipv6</code> when <code>x-forwarded-host</code>
is empty. (<a
href="https://redirect.github.com/rack/rack/pull/2270">#2270</a>, <a
href="https://github.com/oieioi"><code>@​oieioi</code></a>)</li>
<li>Fix the specification for <code>SERVER_PORT</code> which was
incorrectly documented as required to be an <code>Integer</code> if
present - it must be a <code>String</code> containing digits only. (<a
href="https://redirect.github.com/rack/rack/pull/2296">#2296</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
<li><code>SERVER_NAME</code> and <code>HTTP_HOST</code> are now more
strictly validated according to the relevant specifications. (<a
href="https://redirect.github.com/rack/rack/pull/2298">#2298</a>, [<a
href="https://github.com/ioquatix"><code>@​ioquatix</code></a>])</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rack/rack/commit/df2f3f2804373acafc429ed9f0770847a9c6b226"><code>df2f3f2</code></a>
Bump patch version.</li>
<li><a
href="https://github.com/rack/rack/commit/aed514df37e33907df3c971ed3ca9a0a20ac2901"><code>aed514d</code></a>
Fix ReDoS and consistency in multipart regexes</li>
<li><a
href="https://github.com/rack/rack/commit/352650a65cc2027191aaaa1b93a302542ceeb638"><code>352650a</code></a>
Synchronize changelog.</li>
<li>See full diff in <a
href="https://github.com/rack/rack/compare/v3.1.15...v3.1.16">compare
view</a></li>
</ul>
</details>
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Gemfile.lock

@@ -282,7 +282,7 @@ GEM
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.8.1)
-    rack (3.1.15)
+    rack (3.1.16)
     rack-protection (4.1.1)
       base64 (>= 0.1.0)
       logger (>= 1.6.0)