chore!: update doc and podspec

Author: abelonogov-ld

LaunchDarkly.podspec

@@ -24,7 +24,7 @@ Pod::Spec.new do |ld|
   ld.ios.deployment_target     = "13.0"
   ld.watchos.deployment_target = "6.0"
   ld.tvos.deployment_target    = "13.0"
-  ld.osx.deployment_target     = "10.15"
+  ld.osx.deployment_target     = "12.0"
 
   ld.source       = { :git => ld.homepage + '.git', :tag => ld.version}
 

README.md

@@ -32,7 +32,7 @@ And supports the following device platforms:
 | iOS      | 13.0    |
 | watchOS  | 6.0     |
 | tvOS     | 13.0    |
-| macOS    | 10.15   |
+| macOS    | 12.00   |
 
 Installation
 -----------