Merge pull request #1139 from anton-plebanovich/fix/macos-podspec-version

Mac OS version fix in Podspec

Author: tristanhimmelman

ObjectMapper.podspec

@@ -9,7 +9,7 @@ Pod::Spec.new do |s|
 
   s.watchos.deployment_target = '2.0'
   s.ios.deployment_target = '13.0'
-  s.osx.deployment_target = '10.9'
+  s.osx.deployment_target = '10.10'
   s.tvos.deployment_target = '9.0'
 
   s.swift_version = '5.0'