Unable to get coverage of aws python lambda project

Issue : Unable to get coverage of aws python lambda project . no sonar analysis picked up 0 coverage

using Git Hub actions pull request workflow
Languages of the repository - python

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file: tox.ini


[tox]
envlist = py39
skipsdist = True
[testenv]
deps =
    pytest
    boto3
    botocore
    mock
    requests
    pymysql
    coverage
commands =
    coverage run -m pytest
    coverage xml

[coverage:run]
relative_files = True
branch = True

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Repository folder structure
 
root -> 
         .github -> 
					pull_request.yml
					
         create-sso-users-> 
					create-sso-users-function->  app.py
					events-> event.json
					tests->
						unit->
						         test_handler.py
         sonar-project.properties
         tox.ini
	.coverage

--------------------

------------
pull_request.yml


name: Pull Request

# This workflow is triggered on pull requests to the develop branch only
# Runs on Open and Sync - but will only actually run if PR is Ready for Review (Line 19) 
on:
  pull_request:
    branches:
      - develop

concurrency:
  group: ci-${{ github.head_ref }}
  cancel-in-progress: true

jobs:
  build:
    runs-on:
      - ubuntu-20.04

    steps:
      # Checkout repo
      - uses: actions/checkout@v2

      # Dependencies
      - name: Set up Python 3.9
        uses: actions/setup-python@v4
        with:
            python-version: '3.9'

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip          
          cd create-sso-users
          cd tests
      - name: Install tox and any other packages
        run: pip install tox
      - name: Run tox
        run: tox -e py
      - name: SonarQube Scan
        uses: sonarsource/sonarcloud-github-action@master
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
          SONAR_HOST_URL: https://sonarcloud.io

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What do the logs say?