[ObjC] Add the privacy manifest to the ObjC CocoaPod. (#15663)

There are no restrict calls, so the manifest asserts that.

The CocoaPods support now ensure you are using CocoaPods >= 1.12 as that
avoids all the know bugs in CocoaPods support needed to capture the
Privacy Manifest in a resource bundle.

PiperOrigin-RevId: 602433417

Co-authored-by: Thomas Van Lenten <[email protected]>

Protobuf.podspec

@@ -10,7 +10,10 @@ Pod::Spec.new do |s|
   s.homepage = 'https://github.com/protocolbuffers/protobuf'
   s.license  = 'BSD-3-Clause'
   s.authors  = { 'The Protocol Buffers contributors' => '[email protected]' }
-  s.cocoapods_version = '>= 1.0'
+
+  # Ensure developers won't hit CocoaPods/CocoaPods#11402 with the resource
+  # bundle for the privacy manifest.
+  s.cocoapods_version = '>= 1.12.0'
 
   s.source = { :git => 'https://github.com/protocolbuffers/protobuf.git',
                :tag => "v#{s.version}" }
@@ -30,6 +33,10 @@ Pod::Spec.new do |s|
   # left out, as it's an umbrella implementation file.
   s.exclude_files = 'objectivec/GPBProtocolBuffers.m'
 
+  s.resource_bundle = {
+    "Protobuf_Privacy" => "PrivacyInfo.xcprivacy"
+  }
+
   # Set a CPP symbol so the code knows to use framework imports.
   s.user_target_xcconfig = { 'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1' }
   s.pod_target_xcconfig = { 'GCC_PREPROCESSOR_DEFINITIONS' => '$(inherited) GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS=1' }