buf 1.30.0

[BrewTestBot]

Created by brew bump

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Created with brew bump-formula-pr.

release notes

- Update `buf generate` so it populates the recently-added [`source_file_descriptors`](https://github.com/protocolbuffers/protobuf/blob/v24.0/src/google/protobuf/compiler/plugin.proto#L96-L99) field of the `CodeGeneratorRequest` message. This provides the plugin with access to options that are configured to only be retained in source and not at runtime (via [field option](https://github.com/protocolbuffers/protobuf/blob/v24.0/src/google/protobuf/descriptor.proto#L693-L702)). Descriptors in the `proto_file` field will not include any options configured this way for the files named in `file_to_generate` field.
- Add `--exclude-source-retention-options` flag to `buf build`, which causes options configured to only be retained in source to be stripped from the output descriptors.

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