cppgc: Fix GCC compilation error

Without the added header, GCC may produce the following error:

<_CharT>, std::istreambuf_iterator<_CharT>, const _CharT2&)
     find(istreambuf_iterator<_CharT> __first,
     ^~~~
note: template argument deduction/substitution failed

Change-Id: I92b226e469d780a778262847d90cf12a372dcc46
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2176052Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#67514}

src/heap/cppgc/heap-page.cc

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <algorithm>
+
 #include "src/heap/cppgc/heap-page.h"
 
 #include "include/cppgc/internal/api-constants.h"