pub_sub example with FastAPI

[ya-boiko]

Describe the issue
The code sample with FastAPI (/quickstarts/pub_sub/python/sdk/order-processor-fastapi) doesn't work quite right (maybe it's just me). Order-processor-sdk and checkout-sdk start, but order-processor-sdk doesn't accept messages. The Flask example works correctly

URL of the docs
quickstarts/pubsub-quickstart

Expected content
dapr.yaml

version: 1
common:
  resourcesPath: ../../components/
apps:
  - appID: order-processor-sdk
    appDirPath: ./order-processor-fastapi/
    appPort: 6001
    command: ["uvicorn", "app:app"]
  - appID: checkout-sdk
    appDirPath: ./checkout/
    command: ["python3", "app.py"]

Screenshots

[ya-boiko]

The solution is to change the order-processor-sdk port from 6001 to 8000 and update the commands for both apps

version: 1
common:
  resourcesPath: ../../components/
apps:
  - appID: order-processor-sdk
    appDirPath: ./order-processor-fastapi/
    appPort: 8000
    command: ["/bin/bash", "-c", "source .venv/bin/activate && uvicorn app:app"]
  - appID: checkout-sdk
    appDirPath: ./checkout/
    command: ["/bin/bash", "-c", "source .venv/bin/activate && python3 app.py"]