Downgrade podspec to 15.6

Author: taflanidi

InputMask.podspec

@@ -1,13 +1,13 @@
 Pod::Spec.new do |spec|
   spec.name             = "InputMask"
-  spec.version          = "7.0.0"
+  spec.version          = "7.0.1"
   spec.summary          = "InputMask"
   spec.description      = "User input masking library."
   spec.homepage         = "https://github.com/RedMadRobot/input-mask-ios"
   spec.license          = "MIT"
   spec.author           = { "Egor Taflanidi" => "[email protected]" }
   spec.source           = { :git => "https://github.com/RedMadRobot/input-mask-ios.git", :tag => spec.version.to_s }
-  spec.platform         = :ios, "16.1"
+  spec.platform         = :ios, "15.6"
   spec.requires_arc     = true
   spec.source_files     = "Source/InputMask/InputMask/Classes/**/*"
   spec.swift_version    = '5.7'