chore(deps): Update ag2[mcp,openai,tracing] requirement from >=0.12.3 to >=0.13.1 in /a2a/simple_generalist

[dependabot]

Updates the requirements on ag2[mcp,openai,tracing] to permit the latest version.

Release notes

Sourced from ag2[mcp,openai,tracing]'s releases.

v0.13.1

Highlights

🛣️ Continuing the Path to v1.0

v0.13.1 spans both the Beta and Classic frameworks.

📍 Release Roadmap to v1.0

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🔬 Beta Framework

Dynamic Agents

• 🏭 Dynamic Tool Factory – Agents can now create an agent dynamically through their tooling.

AG-UI

• 🧠 Reasoning Messages – AG-UI now supports reasoning messages in both directions.
• 🎨 Multimodal User Content – AG-UI supports multimodal user message content.
• 📷 Media Inputs – Added media input support to the AG-UI stream handler.

New LLM Provider

• ⚡ xAI Provider – Added support for xAI (Grok) models.

Network

• 🏷️ Named Views – N-party channels now support [name] prefixes for clearer multi-party addressing.
• 🏁 Workflow Finish Tool – Tools can now signal completion to the WorkflowAdapter, ending the workflow from within a tool call.
• 🔄 Consistent Envelope Rendering – Current-turn envelopes now render consistently with history, plus a coordinator pattern.
• 🧹 DiscussionAdapter Cleanup – Removed the say tool from the DiscussionAdapter.

Middleware

• 🚦 ConditionalMiddleware – New middleware (autogen.beta.middleware) to gate middleware activation based on event conditions.
• 🔧 Event Type Negation – Added __invert__ to _ConditionMeta (autogen.beta.events) for negating event types (e.g. ~ToolCallEvent).

Other Beta Updates

• 📊 Custom Telemetry Spans – Add custom span attributes and values for telemetry.
• 🔤 UTF-8 Encoding – Pinned read/write encoding to UTF-8 in the Beta filesystem toolset.

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⚙️ Core Framework

Bug Fixes

... (truncated)

Commits

• c3a6de7 feat(beta): introduce dynamic_agent tool factory (#2884)
• b66d3a7 feat(beta): add xAI provider (#2890)
• 915e36f fix(tests): Remove tests for dead code, update network test without say tool,...
• cbd52e5 Version bump 0.13.1 (#2897)
• 79ff394 fix(interop/langchain): use arun for async langchain tools (#2806)
• 17aecc3 fix(coding/jupyter): pin _save_html encoding to UTF-8 (#2825)
• 1400a5c fix(environments): pin PythonEnvironment._write_to_file encoding to UTF-8 (#2...
• f50307a fix(mcp/mcp_proxy): pin file IO encoding to UTF-8 (#2826)
• 9b51f8b fix+docs(beta): Remove say tool from DiscussionAdapter + What Survives (Netwo...
• aece2bb fix: use serializable LLM guardrail response schema (#2830)
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