Update absl submodule and dep to latest 20230802.0 LTS (#13515)

Fixes https://github.com/protocolbuffers/protobuf/issues/13499

Needs to be backported to 24.x

Closes #13515

COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/13515 from zhangskz:update-absl 508f2912e3b6faf8dcf72dc7f3d98f87b3ffcfb2
PiperOrigin-RevId: 555679980

zhangskz committed 2y ago

e7bb34db3c57617f772a04d343a8bfa5109cf6cf

Parent: 6eecc4f

Committed by Copybara-Service <copybara-worker@google.com> on 8/10/2023, 10:43:20 PM