Update changelog with Evaluator changes (#43718)

* update

* Apply suggestion from @Copilot

Co-authored-by: Copilot <[email protected]>

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Co-authored-by: Waqas Javed <[email protected]>
Co-authored-by: Copilot <[email protected]>

Author: 3 people

sdk/evaluation/azure-ai-evaluation/CHANGELOG.md

@@ -6,6 +6,15 @@
 
 - Updated `IndirectAttack` risk category for RedTeam to `IndirectJailbreak` to better reflect its purpose. This change allows users to apply cross-domain prompt injection (XPIA) attack strategies across all risk categories, enabling more comprehensive security testing of AI systems against indirect prompt injection attacks during red teaming.
 - Added `TaskAdherence`, `SensitiveDataLeakage`, and `ProhibitedActions` as cloud-only agent safety risk categories for red teaming. 
+- Updated all evaluators' output to be of the following schema:
+  - `gpt_{evaluator_name}`, `{evaluator_name}`: float score,
+  - `{evaluator_name}_result`: pass/fail based on threshold,
+  - `{evaluator_name}_reason`, `{evaluator_name}_threshold`
+  - `{evaluator_name}_prompt_tokens`, `{evaluator_name}_completion_tokens`, `{evaluator_name}_total_tokens`, `{evaluator_name}_finish_reason`
+  - `{evaluator_name}_model`: model used for evaluation
+  - `{evaluator_name}_sample_input`, `{evaluator_name}_sample_output`: input and output used for evaluation
+  
+  This change standardizes the output format across all evaluators and follows OTel convention.
 
 ### Bugs Fixed