feat: Update Leanplum SDK to Version 6.x (#22)

* feat: Update Leanplum SDK to Version 6.x

Cartfile

@@ -1,2 +1,2 @@
-github "leanplum/leanplum-ios-sdk" ~> 4.1
+github "leanplum/leanplum-ios-sdk" ~> 6.1
 github "mparticle/mparticle-apple-sdk" ~> 8.0

Package.swift

@@ -15,7 +15,7 @@ let package = Package(
                .upToNextMajor(from: "8.7.0")),
       .package(name: "Leanplum",
                url: "https://github.com/leanplum/leanplum-ios-sdk",
-               .upToNextMajor(from: "4.1.0")),
+               .upToNextMajor(from: "6.1.0")),
     ],
     targets: [
         .target(

mParticle-Leanplum.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
     s.ios.deployment_target = "9.0"
     s.ios.source_files      = 'mParticle-Leanplum/*.{h,m,mm}'
     s.ios.dependency 'mParticle-Apple-SDK/mParticle', '~> 8.0'
-    s.ios.dependency 'Leanplum-iOS-SDK', '~> 4.1'
+    s.ios.dependency 'Leanplum-iOS-SDK', '~> 6.1'
     s.ios.frameworks = 'CFNetwork', 'SystemConfiguration', 'Security', 'CoreLocation', 'StoreKit'
     s.ios.weak_frameworks = 'AdSupport'
     s.ios.pod_target_xcconfig = {