feat(ios): set build config setting for deployment target to 13.4

ios/Podfile

     end
     target.build_configurations.each do |config|
       config.build_settings['SUPPORTS_MACCATALYST'] = 'NO'
-      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '12.4'
+      config.build_settings['IPHONEOS_DEPLOYMENT_TARGET'] = '13.4'
       config.build_settings['OTHER_SWIFT_FLAGS'] = '$(inherited) -no-verify-emitted-module-interface'
     end
   end

ios/Podfile.lock

   SocketRocket: f32cd54efbe0f095c4d7594881e52619cfe80b17
   Yoga: eddf2bbe4a896454c248a8f23b4355891eb720a6
 
-PODFILE CHECKSUM: 800d7a69662479637fc7456e26cd2ccd3f18b5fb
+PODFILE CHECKSUM: 4639a3e85608b7d7967629e55e58c8e7a8dcfd1d
 
 COCOAPODS: 1.14.3