Update iOS dependencies - Wed Feb 09 2022 (#845)

[Triggered](https://github.com/firebase/firebase-ios-sdk/actions/runs/1820752743) by [firebase-ios-sdk refs/tags/v8.12.1 release](https://github.com/firebase/firebase-ios-sdk/releases/tag/refs/tags/v8.12.1).

  ### iOS

- Firebase/Analytics → 8.12.1
- Firebase/Auth → 8.12.1
- Firebase/Core → 8.12.1
- Firebase/Crashlytics → 8.12.1
- Firebase/Database → 8.12.1
- Firebase/DynamicLinks → 8.12.1
- Firebase/Firestore → 8.12.1
- Firebase/Functions → 8.12.1
- Firebase/Installations → 8.12.1
- Firebase/Messaging → 8.12.1
- Firebase/RemoteConfig → 8.12.1
- Firebase/Storage → 8.12.1

> Created by [Update Android and iOS dependencies workflow](https://github.com/firebase/firebase-cpp-sdk/actions/runs/1820754698).

Co-authored-by: firebase-workflow-trigger-bot <[email protected]>

Author: firebase-workflow-trigger[bot]

admob/integration_test/Podfile

@@ -3,7 +3,7 @@ platform :ios, '10.0'
 # Firebase AdMob test application.
 
 target 'integration_test' do
-  pod 'Firebase/Analytics', '8.11.0'
+  pod 'Firebase/Analytics', '8.12.1'
   pod 'Google-Mobile-Ads-SDK', '7.69.0-cppsdk'
 end
 

analytics/integration_test/Podfile

@@ -5,12 +5,12 @@ platform :ios, '10.0'
 
 target 'integration_test' do
   platform :ios, '10.0'
-  pod 'Firebase/Analytics', '8.11.0'
+  pod 'Firebase/Analytics', '8.12.1'
 end
 
 target 'integration_test_tvos' do
   platform :tvos, '12.0'
-  pod 'Firebase/Analytics', '8.11.0'
+  pod 'Firebase/Analytics', '8.12.1'
 end
 
 post_install do |installer|