verson to 8.4.2

Author: YangSen-qn

Qiniu.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = 'Qiniu'
-  s.version      = '8.4.1'
+  s.version      = '8.4.2'
   s.summary      = 'Qiniu Resource Storage SDK for iOS and Mac'
   s.homepage     = 'https://github.com/qiniu/objc-sdk'
   s.social_media_url = 'http://weibo.com/qiniutek'

QiniuSDK/Utils/QNVersion.h

@@ -11,4 +11,4 @@
 /**
  *    sdk 版本
  */
-static NSString *const kQiniuVersion = @"8.4.1";
+static NSString *const kQiniuVersion = @"8.4.2";

README.md

@@ -14,19 +14,19 @@
 通过 CocoaPods
 
 ```ruby
-pod "Qiniu", "~> 8.4.1" 
+pod "Qiniu", "~> 8.4.2" 
 ```
 
 通过 Swift Package Manager (Xcode 11+)
 ```
 App 对接:
-File -> Swift Packages -> Add Package Dependency，输入 HappyDNS 库链接，选择相应版本即可
+File -> Swift Packages -> Add Package Dependency，输入库链接，选择相应版本即可
 库链接: https://github.com/qiniu/objc-sdk
 
 库对接:
 let package = Package(
     dependencies: [
-        .package(url: "https://github.com/qiniu/objc-sdk", from: "8.4.1")
+        .package(url: "https://github.com/qiniu/objc-sdk", from: "8.4.2")
     ],
     // ...
 )