main.yml

import yaml

def update_workflow_file(file_path):
    # Open the workflow file
    with open(file_path, 'r') as file:
        # Parse the YAML content
        workflow_dict = yaml.safe_load(file)

    # Locate the google-github-actions/auth@v1 step
    steps = workflow_dict['jobs']['build']['steps']
    for step in steps:
        if step['uses'] == 'google-github-actions/auth@v1':
            # Add the missing specification as an input
            step['with'] = {
                'workload_identity_provider': 'your_workload_identity_provider',
                # or
                'credentials_json': 'your_credentials_json'
            }

            # Inject the input value into the environment
            step['env'] = {
                'YOUR_ENV_VARIABLE': '${{ secrets.YOUR_SECRET }}'
            }

    # Save the modified workflow file
    with open(file_path, 'w') as file:
        yaml.dump(workflow_dict, file)

# Update the workflow file
update_workflow_file(".github/workflows/main.yml")