Add changelog for 2025-06-03

Author: quantstruct-bot

fern/changelog/2025-05-31.mdx

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+# SIP Call Error Handling Updates
+
+The following specific SIP error codes have been added to help identify call failures:
+
+<CodeBlocks>
+- `call.in-progress.error-sip-inbound-call-failed-to-connect`
+- `call.in-progress.error-providerfault-outbound-sip-403-forbidden`
+- `call.in-progress.error-providerfault-outbound-sip-407-proxy-authentication-required`
+- `call.in-progress.error-providerfault-outbound-sip-503-service-unavailable`
+- `call.in-progress.error-providerfault-outbound-sip-480-temporarily-unavailable`
+- `call.in-progress.error-sip-outbound-call-failed-to-connect`
+- `call.in-progress.error-vapifault-worker-died`
+</CodeBlocks>
+
+<Warning>
+  The generic error code `call.in-progress.error-sip-telephony-provider-failed-to-connect-call` has been removed. Update your error handling to use the new specific error codes instead.
+</Warning>

fern/changelog/2025-06-03.mdx

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+# Azure OpenAI Compatibility Mode and JSON Schema Updates
+
+1. **`toolStrictCompatibilityMode` for Azure OpenAI Models**: Added a new option to handle Azure OpenAI's validation limitations. Set `toolStrictCompatibilityMode` in your `OpenAIModel` config to either:
+   - `strip-parameters-with-unsupported-validation`: Removes entire parameters that have unsupported validations
+   - `strip-unsupported-validation`: Keeps parameters but removes unsupported validation aspects
+   Default is `strip-unsupported-validation`.