build(deps): bump protobuf from 2.28.0 to 3.5.0

[dependabot]

Bumps protobuf from 2.28.0 to 3.5.0.

Changelog

Sourced from protobuf's changelog.

Changelog

Changelog after version 3.0.0 lives in https://github.com/stepancheg/rust-protobuf/blob/master/CHANGELOG.md.

[3.0.0] - 2022-05-01

• New stable version released.

[3.0.0-alpha.14] - 2022-05-01

• JSON support is moved into a separate crate protobuf-json-mapping
• Generated code for well known types is more similar to regular protobuf now (well known type modules are now placed as is in well_known_types module instead of being flattened).
• file_descriptor_proto() function is private now in generated code. Descriptor can be obtained by calling file_descriptor().proto().
• file_descriptor() now returns &'static FileDescriptor
• Hide UnknownValues from public API (keep UnknownFields)

[3.0.0-alpha.13] - 2022-05-01

• More efficient reflective operations
• Fewer internals exposed from public API (e.g. ProtobufType is no longer public)

[3.0.0-alpha.12] - 2022-04-30

• keywords are now escaped with _ suffix
• generate trivial is_initialized functions when possible

[3.0.0-alpha.11] - 2022-04-29

• all fields are public now in generated messages
• protobuf-support crate added. This crate contains utilities shared by other protobuf crates. This crate has no public API.

[3.0.0-alpha.10] - 2022-04-11

• remove expose_oneof codegen option (it is on by default for a long time)
• remove unused serde-related options from rustproto.proto
• in generated code, enum variant names are converted to camel case
• generate SpecialFields field in messages instead of a pair (unknown_fields, cached_size)
• reflection operations like nested_messages now return iterator instead of Vec
• replace fn Enum::values() with const Enum::VALUES
• remove EnumFull::enum_descriptor(), does not provide much value over enum_descriptor_static
• rename EnumFull::enum_descriptor_static -> enum_descriptor
• fix EnumFull::descriptor for enums with allow_alias
• rename MessageDescriptor::enums to nested_enums
• rename MessageDescriptor::descriptor_static to descriptor
• add EnumDescriptor::enclosing_message()
• Message now requires PartialEq

... (truncated)

Commits

• 22655e3 Bump version to 3.5.0
• 7843e95 Regnerate protos
• 515bfe0 Bump version to 3.5.0-pre
• 0e6f3ff Disable miri test which seems to run too slowly
• 845a60f Update CHANGELOG.md
• c0a3b0d Advance pos_of_buffer_start when writing directly to a writer
• 639579d Update CHANGELOG.md
• 263ee76 Codegen: option to use BTreeMap as map representation
• eb5a051 More warnings
• abc072d Mute more warnigns
• Additional commits viewable in compare view

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@dependabot[bot]: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/customrust-e2e	26fcf2a	link	true	/test customrust-e2e
ci/prow/customrust-images	26fcf2a	link	true	/test customrust-images
ci/prow/images	26fcf2a	link	true	/test images
ci/prow/e2e	26fcf2a	link	true	/test e2e

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[dependabot]

Superseded by #930.