Additional Python Files in azure Function

I have a python Funktion function_app.py(triggered every minute) in Azure Like this

import azure.functions as func
import logging

app = func.FunctionApp()

@app.timer_trigger(schedule="0 */1 * * * *", arg_name="myTimer", run_on_startup=False,
              use_monitor=False) 
def zsdbi(myTimer: func.TimerRequest) -> None:
    
    if myTimer.past_due:
        logging.info('The timer is past due!')

    logging.info('09 Python timer trigger function executed.')

On the same Level in the Filesystem I have a file newconfig.py like this :

class MyConfig:

    def __init__(self, ftp_host=None, ftp_username=None, ftp_password=None,
                 sharepoint_url=None, sharepoint_clientid=None, sharepoint_clientsecret=None, azure=False):

        self._ftp_host = ftp_host
        self._ftp_username = ftp_username
        self._ftp_password = ftp_password
        self._sharepoint_url = sharepoint_url
        self._sharepoint_clientid = sharepoint_clientid
        self._sharepoint_clientsecret = sharepoint_clientsecret

When I try to import newconfig.py in function_app.py like this :

import azure.functions as func
import datetime
import json
import logging
import newconfig           # This results in Error

app = func.FunctionApp()

@app.timer_trigger(schedule="0 */1 * * * *", arg_name="myTimer", run_on_startup=False,
              use_monitor=False) 

The function is not running anymore I assume caused by an error during Import. How can I add additonal python files not available in public packages to my Azure function

Edit 1

The function is deployed via github actions as :

    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: 'Azure Login'
        uses: azure/login@v2
        with:
          client-id: ${{ env.ARM_CLIENT_ID }}
          subscription-id: ${{ env.ARM_SUBSCRIPTION_ID }}
          tenant-id: ${{ env.ARM_TENANT_ID }}
      - name: Set up Python
        uses: actions/setup-python@v4
        with:
          python-version: '3.9'
      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r requirements.txt
      - name: 'Download Azure Function publishing profile'
        env:
          AZURE_SUBSCRIPTION_ID: ${{ env.ARM_SUBSCRIPTION_ID }}
          FUNCTION_APP_RESOURCE_GROUP: ${{ env.ARM_RESOURCE_GROUP_NAME }}
          FUNCTION_APP_NAME: fa-${{ env.APP_NAME }}
        run: |
          echo "FUNCTION_APP_PUB_PROFILE=$(az functionapp deployment list-publishing-profiles --subscription $AZURE_SUBSCRIPTION_ID --resource-group $FUNCTION_APP_RESOURCE_GROUP --name $FUNCTION_APP_NAME --xml)" >> $GITHUB_ENV
      - name: "Deploy function"
        uses: Azure/functions-action@v1
        with:
          app-name: fa-${{ env.APP_NAME }}
          publish-profile: ${{ env.FUNCTION_APP_PUB_PROFILE }}
          package: src

srccontaining all python files