upgrade iOS, macOS, windows sdk version to 3.2.1

Author: Xia Ning

iOS/Podfile

@@ -8,7 +8,7 @@ target 'APIExample' do
   pod 'AGEVideoLayout', '~> 1.0.2'
   # use this if you don't need encryption feature
   # pod 'AgoraRtcEngine_iOS', '3.2.0'
-  pod 'AgoraRtcEngine_iOS', '3.2.0'
+  pod 'AgoraRtcEngine_iOS', '3.2.1'
   #pod 'AgoraMediaPlayer_iOS', '1.1.4'
 end
 

macOS/Podfile

@@ -7,7 +7,7 @@ target 'APIExample' do
 
   # Pods for APIExample
   pod 'AGEVideoLayout', '~> 1.0.2'
-  pod 'AgoraRtcEngine_macOS', '3.2.0'
+  pod 'AgoraRtcEngine_macOS', '3.2.1'
 
   target 'APIExampleTests' do
     inherit! :search_paths

windows/APIExample/install.ps1

@@ -1,6 +1,6 @@
 $ThirdPartysrc = 'https://agora-adc-artifacts.oss-cn-beijing.aliyuncs.com/libs/ThirdParty.zip'
 $ThirdPartydes = 'ThirdParty.zip'
-$agora_sdk = 'https://download.agora.io/sdk/release/Agora_Native_SDK_for_Windows_v3_2_0_FULL.zip'
+$agora_sdk = 'https://download.agora.io/sdk/release/Agora_Native_SDK_for_Windows_v3_2_1_FULL.zip'
 $agora_des = 'Agora_Native_SDK_for_Windows_v3_2_0_FULL.zip'
 $MediaPlayerSDK = 'https://download.agora.io/sdk/release/Agora_Media_Player_for_Windows_x86_rel.v1.1.0.16486_20200507_1537.zip'
 $MediaPlayerDes = 'MediaPlayerPartSave.zip'