update podspec v1.2.2

SkyWay.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'SkyWay'
-  s.version          = '1.2.1'
+  s.version          = '1.2.2'
   s.summary          = 'SkyWay simplifies peer-to-peer data, video, and audio calls using WebRTC.'
   s.description      = <<-DESC
   "SkyWay" is a framework that enables using SkyWay in iOS apps.
@@ -9,7 +9,7 @@ SkyWay simplifies peer-to-peer data, video, and audio calls using WebRTC.
   s.homepage         = 'https://webrtc.ecl.ntt.com'
   s.license          = { :type => 'Apache License', :file => 'LICENSE.txt' }
   s.author           = { 'NTT Communications' => '[email protected]' }
-  s.source           = { :http => 'https://github.com/skyway/skyway-ios-sdk/releases/download/v1.2.1/SkyWay_iOS_1.2.1.zip', :flatten => true }
+  s.source           = { :http => 'https://github.com/skyway/skyway-ios-sdk/releases/download/v1.2.2/SkyWay_iOS_1.2.2.zip', :flatten => true }
   s.ios.deployment_target = '9.0'
   s.vendored_frameworks = 'SkyWay.framework'
   s.source_files  = 'SkyWay.framework/Headers/*.h'