[ios] Fix up branches in podspec files

Spine.podspec

@@ -13,7 +13,7 @@ Spine runtimes for iOS.
   s.author           = { "Esoteric Software LLC  " => "https://esotericsoftware.com" }
   s.license          = { :file => 'LICENSE' }
 
-  s.source           = { :git => 'https://github.com/esotericsoftware/spine-runtimes.git', :branch => 'cocoapods' }
+  s.source           = { :git => 'https://github.com/esotericsoftware/spine-runtimes.git', :branch => '4.2' }
   s.source_files     = 'spine-ios/Sources/Spine/**/*.{swift,metal}'
   s.platform         = :ios, '13.0'
 

SpineCppLite.podspec

@@ -14,7 +14,7 @@ Spine runtimes for iOS.
   s.license             = { :file => 'LICENSE' }
   s.platform            = :ios, '13.0'
 
-  s.source              = { :git => 'https://github.com/esotericsoftware/spine-runtimes.git', :branch => 'cocoapods' }
+  s.source              = { :git => 'https://github.com/esotericsoftware/spine-runtimes.git', :branch => '4.2' }
   s.source_files        =  'spine-cpp/spine-cpp/**/*.{h,cpp}', 'spine-cpp/spine-cpp-lite/*.{h,cpp}'
   s.module_map          = 'spine-cpp/spine-cpp-lite/module.modulemap'
   s.pod_target_xcconfig = {

SpineShadersStructs.podspec

@@ -14,7 +14,7 @@ Metal shaders structs for spine.
   s.license             = { :file => 'LICENSE' }
   s.platform            = :ios, '13.0'
 
-  s.source              = { :git => 'https://github.com/esotericsoftware/spine-runtimes.git', :branch => 'cocoapods' }
+  s.source              = { :git => 'https://github.com/esotericsoftware/spine-runtimes.git', :branch => '4.2' }
   s.source_files        = 'spine-ios/Sources/SpineShadersStructs/*.{h,cpp}'
 
   s.pod_target_xcconfig = {