Bump minimum supported version to iOS 13

After all, all clients of this app already support above iOS 13.

Hopefully this will address the 12 vs 13 issue we're seeing in CI.

https://buildkite.com/automattic/aztec-editor-ios/builds/211/steps/canvas?jid=019738a1-cb58-4c2d-84de-d8aa8f76a57b

Author: mokagio

Example/AztecExample.xcodeproj/project.pbxproj

@@ -479,7 +479,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = /usr/include/libxml2;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -534,7 +534,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = /usr/include/libxml2;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				STRIP_INSTALLED_PRODUCT = NO;
@@ -715,7 +715,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = /usr/include/libxml2;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -801,7 +801,7 @@
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = /usr/include/libxml2;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 13.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;

Package.swift

@@ -5,7 +5,7 @@ import PackageDescription
 
 let package = Package(
     name: "WordPress-AztecEditor-iOS",
-    platforms: [.iOS(.v12)],
+    platforms: [.iOS(.v13)],
     products: [
         .library(name: "Aztec", targets: ["Aztec"]),
         .library(name: "HTMLParser", targets: ["HTMLParser"]),

WordPress-Aztec-iOS.podspec

@@ -15,7 +15,7 @@ Pod::Spec.new do |s|
   s.license       = { type: 'MPLv2', file: 'LICENSE.md' }
   s.author        = { 'The WordPress Mobile Team' => 'mobile@wordpress.org' }
 
-  s.ios.deployment_target = '12.0'
+  s.ios.deployment_target = '13.0'
   s.swift_version = '5.0'
 
   s.source        = { git: 'https://github.com/wordpress-mobile/AztecEditor-iOS.git', tag: s.version.to_s }

WordPress-Editor-iOS.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |s|
   s.license       = { type: 'MPLv2', file: 'LICENSE.md' }
   s.author        = { 'The WordPress Mobile Team' => 'mobile@wordpress.org' }
 
-  s.ios.deployment_target = '12.0'
+  s.ios.deployment_target = '13.0'
   s.swift_version = '5.0'
 
   s.source        = { git: 'https://github.com/wordpress-mobile/AztecEditor-iOS.git', tag: s.version.to_s }