[Bug]: LangGraph Podcast referencing project 522309567947

### File Name

gemini/orchestration /langgraph_gemini_podcast.ipynb

### What happened?

Running synthesize_speech() returns permission denied to project 522309567947 even though personal project was referenced earlier in the notebook, please find reference logs attached herewith.

### Relevant log output

```shell
code:

# Generate audio using the Text-to-Speech API
response = client.synthesize_speech(
input=synthesis_input, voice=voice, audio_config=audio_config
)

output:

InactiveRpcError: <_InactiveRpcError of RPC that terminated with:
status = StatusCode.PERMISSION_DENIED
details = "Cloud Text-to-Speech API has not been used in project 522309567947 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/texttospeech.googleapis.com/overview?project=522309567947 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry."
debug_error_string = "UNKNOWN:Error received from peer ipv4:142.251.16.95:443 {grpc_message:"Cloud Text-to-Speech API has not been used in project 522309567947 before or it is disabled. Enable it by visiting https://console.developers.google.com/apis/api/texttospeech.googleapis.com/overview?project=522309567947 then retry. If you enabled this API recently, wait a few minutes for the action to propagate to our systems and retry.", grpc_status:7, created_time:"2025-05-01T16:38:36.607478652+00:00"}">
```

### Code of Conduct

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