עדכון pydantic-ai v2.23.0

תקציר מקורי באנגלית<h2>What's Changed</h2> <h3>🚀 Features</h3> <ul> <li>Add Bedrock support for <code>ModelSettings.extra_headers</code> by <a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/kkauy/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/kkauy">@kkauy</a> in <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="4130964211" data-permission-text="Title is private" data-url="https://github.com/pydantic/pydantic-ai/issues/4825" data-hovercard-type="pull_request" data-hovercard-url="/pydantic/pydantic-ai/pull/4825/hovercard" href="https://github.com/pydantic/pydantic-ai/pull/4825">#4825</a></li> <li>Restore stable <code>gemini-3-pro-image</code> and <code>gemini-3.1-flash-i