Add changelog updates for 2025-03-02 (#238)

Author: quantstruct-bot

fern/changelog/2025-03-02.mdx

@@ -0,0 +1,49 @@
+## Claude 3.7 Sonnet and GPT 4.5 preview, New Hume AI Voice Provider, New Supabase Storage Provider, Enhanced Call Transfer Options
+
+1. **Claude 3.7 Sonnet with Thinking Configuration Support**:
+You can now use the latest claude-3-7-sonnet-20250219 model with a new "thinking" feature via the [`AnthropicThinkingConfig`](https://api.vapi.ai/api#:~:text=AnthropicThinkingConfig) schema. 
+Configure it in `assistant.model` or `call.squad.members.assistant.model`:
+```json
+{
+  "model": "claude-3-7-sonnet-20250219",
+  "provider": "anthropic",
+  "thinking": {
+    "type": "enabled",
+    "budgetTokens": 5000 // min 1024, max 100000
+  }
+}
+```
+
+2. **OpenAI GPT-4.5-Preview Support**:
+You can now use the latest gpt-4.5-preview model as a primary model or fallback option via the [`OpenAIModel`](https://api.vapi.ai/api#:~:text=OpenAIModel) schema.
+Configure it in `assistant.model` or `call.squad.members.assistant.model`:
+```json
+{
+  "model": "gpt-4.5-preview",
+  "provider": "openai"
+}
+```
+
+3. **New Hume Voice Provider**:
+Integrated Hume AI as a new voice provider with the "octave" model for text-to-speech synthesis.
+
+<Frame caption="Hume Voice Provider">
+    <img src="../static/images/changelog/hume-voice-configuration.png" alt="Hume Voice Provider" />
+</Frame>
+
+4. **Supabase Storage Integration**:
+New Supabase S3-compatible storage support for file operations. This integration lets developers configure buckets and paths across 16 regions, enabling structured file storage with proper authentication.
+Configure [`SupabaseBucketPlan`](https://api.vapi.ai/api#:~:text=SupabaseBucketPlan) in `assistant.credentials.bucketPlan`,`call.squad.members.assistant.credentials.bucketPlan`
+
+5. **Voice Speed Control**
+Added a speed parameter to ElevenLabs voices ranging from 0.7 (slower) to 1.2 (faster) [`ElevenLabsVoice`](https://api.vapi.ai/api#:~:text=ElevenLabsVoice). This enhancement gives developers more control over speech cadence for more natural-sounding conversations.
+
+6. **Enhanced Call Transfer Options in TransferPlan**
+Added a new dial option to the sipVerb parameter for call transfers. This complements the existing refer (default) and bye options, providing more flexibility in call handling.
+- 'dial': Uses SIP DIAL to transfer the call
+
+7. **Zero-Value Minumum Subscription Minutes**
+Changed the minimum value for minutesUsed and minutesIncluded from 1 to 0. This supports tracking of new subscriptions and free tiers with no included minutes.
+
+8. **Zero-Value Minimum KeypadInputPlan Timeout**
+Adjusted the KeypadInputPlan.timeoutSeconds minimum from 0.5 to 0.