Protocol Buffers v24.4

Announcements

• Protobuf News may include additional announcements or pre-announcements for upcoming changes.

C++

• Add dependency on absl::layout, and explicitly include absl layout includes (#14042) (96c1a7d)
• Include Abseil's str_cat.h for absl::AlphaNum (#14054) (955d371)

Java

• Rolled back breaking change to gencode before 3.15 (#14246) (b9cf19b)

Python

• Fix python code generation compatibility with Cython (#14240) (fe87c90)