chore: update iOS minimum version & swift version

Author: Esakkiraja-Pothikannan

Package.swift

@@ -1,12 +1,12 @@
-// swift-tools-version:5.4
+// swift-tools-version:5.9
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
 let package = Package(
     name: "RSDKUtils",
     platforms: [
-        .iOS(.v12), .watchOS(.v6), .macOS(.v10_13)
+        .iOS(.v14), .watchOS(.v6), .macOS(.v10_13)
     ],
     products: [
         .library(

RSDKUtils.podspec

@@ -6,8 +6,8 @@ Pod::Spec.new do |s|
   s.homepage     = "https://github.com/rakutentech/ios-sdkutils"
   s.license      = { :type => 'MIT', :file => 'LICENSE' }
   s.source       = { :git => "https://github.com/rakutentech/ios-sdkutils.git", :tag => s.version.to_s }
-  s.platforms    = { :ios => '12.0', :watchos => '6.0' }
-  s.swift_versions = ['5.4', '5.5']
+  s.platforms    = { :ios => '14.0', :watchos => '6.0' }
+  s.swift_versions = ['5.4', '5.5', 5.9]
   s.resources = ['Sources/Resources/PrivacyInfo.xcprivacy']
   s.requires_arc = true
   s.pod_target_xcconfig = {