Google Ads API Client Library for Perl

Changes for 21.0.0 - 2024-02-22

• Added support for Google Ads API v16.0.
• Updated examples to remove references to extensions.
• Added support for a flag on the client that allows making requests without a developer token. This is in preparation for the pilot that uses Google Cloud orgs for API Access levels.
• Added local_services_lead.contact_details and local_services_lead_conversation.message_details.text to the fields to mask from logs.