Bump google.golang.org/grpc from 1.56.2 to 1.56.3 (#246)

Bumps [google.golang.org/grpc](https://github.com/grpc/grpc-go) from
1.56.2 to 1.56.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/grpc/grpc-go/releases">google.golang.org/grpc's
releases</a>.</em></p>
<blockquote>
<h2>Release 1.56.3</h2>
<h1>Security</h1>
<ul>
<li>
<p>server: prohibit more than MaxConcurrentStreams handlers from running
at once (CVE-2023-44487)</p>
<p>In addition to this change, applications should ensure they do not
leave running tasks behind related to the RPC before returning from
method handlers, or should enforce appropriate limits on any such
work.</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/grpc/grpc-go/commit/1055b481ed2204a29d233286b9b50c42b63f8825"><code>1055b48</code></a>
Update version.go to 1.56.3 (<a
href="https://redirect.github.com/grpc/grpc-go/issues/6713">#6713</a>)</li>
<li><a
href="https://github.com/grpc/grpc-go/commit/5efd7bd73e11fea58d1c7f1c110902e78a286299"><code>5efd7bd</code></a>
server: prohibit more than MaxConcurrentStreams handlers from running at
once...</li>
<li><a
href="https://github.com/grpc/grpc-go/commit/bd1f038e7234580c2694e433bec5cd97e7b7f662"><code>bd1f038</code></a>
Upgrade version.go to 1.56.3-dev (<a
href="https://redirect.github.com/grpc/grpc-go/issues/6434">#6434</a>)</li>
<li>See full diff in <a
href="https://github.com/grpc/grpc-go/compare/v1.56.2...v1.56.3">compare
view</a></li>
</ul>
</details>
<br />


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go.mod

@@ -7,14 +7,12 @@ require (
 	github.com/chromium/hstspreload v0.0.0-20230717215815-2404b4b967f9
 	golang.org/x/net v0.12.0
 	google.golang.org/api v0.132.0
-	google.golang.org/grpc v1.56.2
+	google.golang.org/grpc v1.56.3
 )
 
 require (
 	cloud.google.com/go v0.110.6 // indirect
 	cloud.google.com/go/compute v1.22.0 // indirect
-	github.com/googleapis/enterprise-certificate-proxy v0.2.5 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20230720185612-659f7aaaa771 // indirect
 	google.golang.org/genproto/googleapis/api v0.0.0-20230720185612-659f7aaaa771 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20230720185612-659f7aaaa771 // indirect