bump spec version

Author: klundberg

CombineCoreBluetooth.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name = 'CombineCoreBluetooth'
-  spec.version = '0.6.0'
+  spec.version = '0.7.0'
   spec.summary = 'A wrapper API for CoreBluetooth using Combine Publishers.'
   spec.homepage = 'https://github.com/StarryInternet/CombineCoreBluetooth'
   spec.author = { 'Kevin Lundberg' => 'klundberg@starry.com' }
@@ -11,7 +11,7 @@ Pod::Spec.new do |spec|
   spec.tvos.deployment_target = '13.0'
   spec.watchos.deployment_target = '6.0'
 
-  spec.swift_version = '5.3'
+  spec.swift_version = '5.6'
   spec.source = { :git => 'https://github.com/StarryInternet/CombineCoreBluetooth.git', :tag => "#{spec.version}" }
   spec.source_files = 'Sources/CombineCoreBluetooth/**/*.swift'