Log Message:
protobuf py-protobuf: updated to (4.)25.3

Protocol Buffers v25.3

Apple Privacy Manifest Requirement

[CPP] Add the privacy manifest to the C++ CocoaPod. (9d1bc10)
[ObjC] Add the privacy manifest to the ObjC CocoaPod. (cec08dc)
Add PrivacyInfo.xcprivacy

C++

Remove use of mach_absolute_time

Objective-C

[ObjC] Use a local to avoid warnings in 32bit builds. (9dc736d)

Python

Bump python version to 3.9 for gcloud 460.0.0 (17ec19d)

Ruby

Update Ruby GHA to test against Ruby 3.3. (25b1e81)
Pin bundler version to 2.4.22 for Ruby 2.7 support