Glia iOS Core SDK 4.0.0

• Enable connectors and WCC file upload in release builds
• Bump fastlane from 2.240.1 to 2.241.1 in /GliaCoreSDK
• Bump rdoc from 7.2.0 to 8.1.0 in /GliaCoreSDK
• Open the interaction-state socket only when visitor_state lists an interaction
• Added new fetch methods and next query url
• Transcript pagination support preparation
• Report the visitor's mute on interaction audio calls