Log Message:
protobuf py-protobuf: updated to [5.]27.2

Protocol Buffers v27.2

Compiler

Avoid calling absl::InitializeLog in protoc with MSVC (aa7fcb3)

C++

Fix string_type bugs in edition 2023 (4923b8d)
Add simple conformance test that builds the old gencode against the current \ 
runtime. (9cfb59b)
Make the underlying type of the enum by 8-bits instead of using bitfields for \ 
(316f493)

Java

Cleanup imports and comments in V3 stubs. (270ca66)
Add stubs for GeneratedMessageV3, RepeatedFieldBuilderV3, SingleFieldBuilderV3 \ 
for compatibility with older <4.26.x gencode. (1e360a4)
Fix checking unknown field set empty which wasn't exposed yet in 27.x (c7a006a)
Reserialize all unresolved features using java features from the generated pool \ 
in case of descriptors from the custom pool. (2426a02)
Reparse unknown features using extension registry containing Java features. (e5ddc45)
Fix data race in crosslink. (3d71e22)
Fix delimited inheritance in all languages. (c4f359e)

Csharp

Regenerate stale files (29f1b52)
Fix delimited inheritance in all languages. (c4f359e)

Python

Fix delimited inheritance in all languages. (c4f359e)

PHP

PHP C-Extension

Regenerate stale files (29f1b52)
See also UPB changes below, which may affect PHP C-Extension.

Ruby

Ruby C-Extension

Regenerate stale files (29f1b52)
See also UPB changes below, which may affect Ruby C-Extension.

UPB (Python/PHP/Ruby C-Extension)

Fix delimited inheritance in all languages. (c4f359e)

Other

Port windows bootstrapping fix