Chore: update firebase version to 9.1.0 (#89)

* Updated Firebase packages to 9.1.0
Updated platform required version to 11

* Removed unnecessary using on SEGFirebaseIntegration

* Updated Package.resolved

Co-authored-by: Fabricio Bertani <fabricio.bertani@deptagency.com>

Author: FabriBertani

Example/Podfile

@@ -1,4 +1,4 @@
-platform :ios, '10.0'
+platform :ios, '11.0'
 
 use_frameworks!
 

Package.resolved

@@ -6,15 +6,15 @@ let package = Package(
     platforms: [.iOS(.v11)],
     products: [.library(name: "SegmentFirebase", targets: ["SegmentFirebase"])],
     dependencies: [
-      .package(name: "Segment", url: "https://github.com/segmentio/analytics-ios.git", from: "4.1.3"),
-      .package(name: "Firebase", url: "https://github.com/firebase/firebase-ios-sdk.git", from: "8.7.0"),
+      .package(name: "Segment", url: "https://github.com/segmentio/analytics-ios.git", from: "4.1.6"),
+      .package(name: "Firebase", url: "https://github.com/firebase/firebase-ios-sdk.git", from: "9.1.0"),
     ],
     targets: [
         .target(
             name: "SegmentFirebase",
             dependencies: [
               "Segment",
-              .product(name: "FirebaseAnalytics", package: "Firebase"),
+              .product(name: "FirebaseAnalytics", package: "Firebase")
             ],
             path: "Segment-Firebase/Classes",
             publicHeadersPath: ""

Package.swift

@@ -16,17 +16,17 @@ Pod::Spec.new do |s|
   s.source           = { :git => "https://github.com/segment-integrations/analytics-ios-integration-firebase.git", :tag => s.version.to_s }
   s.social_media_url = 'https://twitter.com/segment'
 
-  s.platform     = :ios, '10.0'
+  s.platform     = :ios, '11.0'
   s.requires_arc = true
 
   s.source_files = 'Segment-Firebase/Classes/**/*'
   s.default_subspec = 'Core'
   s.static_framework = true
 
   s.dependency 'Analytics'
-  s.dependency 'Firebase', '~> 8.7'
-  s.dependency 'Firebase/Core', '~> 8.7'
-  s.dependency 'FirebaseAnalytics','~> 8.7'
+  s.dependency 'Firebase', '~> 9.1.0'
+  s.dependency 'Firebase/Core', '~> 9.1.0'
+  s.dependency 'FirebaseAnalytics','~> 9.1.0'
 
   s.subspec 'Core' do |core|
     #For users who only want the core Firebase package

Segment-Firebase.podspec

@@ -118,10 +118,8 @@ - (NSString *)formatFirebaseEventNames:(NSString *)event
                                              kFIREventAddToCart, @"Product Added",
                                              kFIREventRemoveFromCart, @"Product Removed",
                                              kFIREventBeginCheckout, @"Checkout Started",
-                                             kFIREventPresentOffer, @"Promotion Viewed",
                                              kFIREventAddPaymentInfo, @"Payment Info Entered",
                                              kFIREventPurchase, @"Order Completed",
-                                             kFIREventPurchaseRefund, @"Order Refunded",
                                              kFIREventViewItemList, @"Product List Viewed",
                                              kFIREventAddToWishlist, @"Product Added to Wishlist",
                                              kFIREventShare, @"Product Shared",