chore(deps): update dependency com_google_protobuf to v28.3

[zemnmez-renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
com_google_protobuf	http_archive	minor	v28.2 -> v28.3

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Release Notes

protocolbuffers/protobuf (com_google_protobuf)

v28.3: Protocol Buffers v28.3

Compare Source

Announcements

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

C++

• Fix packed reflection handling bug in edition 2023. (#​18405) (protocolbuffers/protobuf@c4124f9)

Java

• Mute the minor version warning https://github.com/protocolbuffers/protobuf/issues/18096 (#​18923) (protocolbuffers/protobuf@fe30f9a)
• Populate Kotlin Manifest Files (#​18859) (protocolbuffers/protobuf@d82fb47)
• Re-export includingDefaultValueFields in deprecated state for important Cloud customer. (protocolbuffers/protobuf@3b62d78)
• Cherrypick restoration of mutableCopy helpers (protocolbuffers/protobuf@3ea568a)
• Fix packed reflection handling bug in edition 2023. (#​18405) (protocolbuffers/protobuf@c4124f9)

Kotlin

• Populate Kotlin Manifest Files (#​18859) (protocolbuffers/protobuf@d82fb47)

Python

• Mute the minor version warning https://github.com/protocolbuffers/protobuf/issues/18096 (#​18923) (protocolbuffers/protobuf@fe30f9a)
• Fix packed reflection handling bug in edition 2023. (#​18405) (protocolbuffers/protobuf@c4124f9)

Other

• Fix merge conflicts (protocolbuffers/protobuf@664a7e1)
• [ObjC] Disabling visionOS on CI. (protocolbuffers/protobuf@22cd8ba)
• Update staleness tests to only run over release branch (#​18398) (protocolbuffers/protobuf@8e94b14)

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