Bump proxy-py from 2.4.8 to 2.4.9 (#9488)

Bumps [proxy-py](https://github.com/abhinavsingh/proxy.py) from 2.4.8 to
2.4.9.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/abhinavsingh/proxy.py/releases">proxy-py's
releases</a>.</em></p>
<blockquote>
<h2>v2.4.9</h2>
<h2>What's Changed</h2>
<ul>
<li><code>GroutClientBasePlugin</code> and example
<code>GroutClientPlugin</code> by <a
href="https://github.com/abhinavsingh"><code>@​abhinavsingh</code></a>
in <a
href="https://redirect.github.com/abhinavsingh/proxy.py/pull/1488">abhinavsingh/proxy.py#1488</a></li>
<li><code>GroutClientBasePlugin</code> ability to modify request object
by <a
href="https://github.com/abhinavsingh"><code>@​abhinavsingh</code></a>
in <a
href="https://redirect.github.com/abhinavsingh/proxy.py/pull/1489">abhinavsingh/proxy.py#1489</a></li>
<li><code>grout</code> host header &amp; dynamic routing doc by <a
href="https://github.com/abhinavsingh"><code>@​abhinavsingh</code></a>
in <a
href="https://redirect.github.com/abhinavsingh/proxy.py/pull/1490">abhinavsingh/proxy.py#1490</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/abhinavsingh/proxy.py/compare/v2.4.8...v2.4.9">https://github.com/abhinavsingh/proxy.py/compare/v2.4.8...v2.4.9</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/abhinavsingh/proxy.py/commit/9077c16b1b965e0ff27b2e2c23edd4116d477e98"><code>9077c16</code></a>
<code>grout</code> host header &amp; dynamic routing doc (<a
href="https://redirect.github.com/abhinavsingh/proxy.py/issues/1490">#1490</a>)</li>
<li><a
href="https://github.com/abhinavsingh/proxy.py/commit/79546ff0cd8a191022e7eb1c659cabd5831df1b9"><code>79546ff</code></a>
<code>GroutClientBasePlugin</code> return None for route to drop the
request</li>
<li><a
href="https://github.com/abhinavsingh/proxy.py/commit/16ab675b548af88abf959ad26c5ff27ab7d23154"><code>16ab675</code></a>
<code>GroutClientBasePlugin</code> ability to modify request object (<a
href="https://redirect.github.com/abhinavsingh/proxy.py/issues/1489">#1489</a>)</li>
<li><a
href="https://github.com/abhinavsingh/proxy.py/commit/0641864478066df0a918f87103744f06ad0c1217"><code>0641864</code></a>
<code>GroutClientBasePlugin</code> and example
<code>GroutClientPlugin</code> (<a
href="https://redirect.github.com/abhinavsingh/proxy.py/issues/1488">#1488</a>)</li>
<li><a
href="https://github.com/abhinavsingh/proxy.py/commit/c703edac0b9bc7a7652dd6059a736acb19c4ddf3"><code>c703eda</code></a>
Add <code>grout</code> wildcard domains and routing doc</li>
<li>See full diff in <a
href="https://github.com/abhinavsingh/proxy.py/compare/v2.4.8...v2.4.9">compare
view</a></li>
</ul>
</details>
<br />


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requirements/constraints.txt

@@ -140,7 +140,7 @@ propcache==0.2.0
     # via
     #   -r requirements/runtime-deps.in
     #   yarl
-proxy-py==2.4.8
+proxy-py==2.4.9
     # via -r requirements/test.in
 pycares==4.4.0
     # via aiodns

requirements/dev.txt

@@ -137,7 +137,7 @@ propcache==0.2.0
     # via
     #   -r requirements/runtime-deps.in
     #   yarl
-proxy-py==2.4.8
+proxy-py==2.4.9
     # via -r requirements/test.in
 pycares==4.4.0
     # via aiodns

requirements/test.txt

@@ -75,7 +75,7 @@ propcache==0.2.0
     # via
     #   -r requirements/runtime-deps.in
     #   yarl
-proxy-py==2.4.8
+proxy-py==2.4.9
     # via -r requirements/test.in
 pycares==4.4.0
     # via aiodns