crewAI 1.15.15 Release Adds AI Flow Reporting, Fixes Bugs

crewAI version 1.15.15 introduces new reporting capabilities for agent flow outcomes, duration, and human-in-the-loop signals. These additions enhance observability, providing developers with deeper insights into their AI agent team's execution and interactions. The release also addresses several bug fixes, including correctly emitting `FlowStartedEvent` and scoping span exports. Additionally, it bumps `torch` to address a security vulnerability and updates `gitpython`.

• →Report flow outcome, duration, and human-in-the-loop signals
• →Emit FlowStartedEvent when a boundary hook aborts the flow
• →Scope span export to our own tracer provider
• →Bump torch to version 2.13.0 to address security vulnerability
• →Bump gitpython to version 3.1.58 in crewai-tools[github]