fix(ios, app): minimum cocoapods version is 1.10.2, not just 1.10.0

This matches underlying firebase-ios-sdk v8.8.0 requirement

Author: mikehardy

packages/app/RNFBApp.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   s.source              = { :git => "https://github.com/invertase/react-native-firebase.git", :tag => "v#{s.version}" }
   s.social_media_url    = 'http://twitter.com/invertaseio'
   s.ios.deployment_target = "10.0"
-  s.cocoapods_version   = '>= 1.10.0'
+  s.cocoapods_version   = '>= 1.10.2'
   s.source_files        = "ios/**/*.{h,m}"
 
   # React Native dependencies