Deployment target update

Author: uttamukkoji

ContentstackUtils.podspec

@@ -16,10 +16,10 @@ s.source           = { :git => 'https://github.com/contentstack/contentstack-uti
 s.social_media_url = 'https://twitter.com/Contentstack'
 s.swift_version = '5.0'
 
-s.ios.deployment_target = '8.0'
-s.osx.deployment_target = '10.9'
-s.tvos.deployment_target = "9.0"
-s.watchos.deployment_target = "2.0"
+s.ios.deployment_target = '10.1'
+s.osx.deployment_target = '10.12'
+s.tvos.deployment_target = "10.0"
+s.watchos.deployment_target = "3.0"
 
 s.source_files =  'Sources/**/*.{swift}'
 s.framework = "Foundation"