chore(deps): update rdkafka requirement from 0.29 to 0.30

[dependabot]

Updates the requirements on rdkafka to permit the latest version.

Changelog

Sourced from rdkafka's changelog.

0.30.0 (2023-05-12)

• Support for unassigning static partitions by passing null to rdsys::rd_kafka_assign and expose the feature as unassign in base_consumer

• Expose rdsys::rd_kafka_incremental_assign and rdsys::rd_kafka_incremental_unassign in base_consumer for incremental changes to static assignments

• Breaking change. util::get_rdkafka_version now returns (i32, String). Previously, it returned (u16, String) which would silently truncate the hex representation of the version:

  Interpreted as hex MM.mm.rr.xx:

  MM = Major mm = minor rr = revision xx = pre-release id (0xff is the final release) E.g.: 0x010902ff = 1.9.2

• Add the AdminClient::delete_groups method, which deletes consumer groups from a Kafka cluster (#510).

  Thanks, @​andrewinci.

#510: fede1024/rust-rdkafka#510

• Add support for the purge API, that allows retreiving messages that were queued for production when shutting down. It is automatically called on Drop. Fixes leaking associated data (futures...).

0.29.0 (2022-10-29)

• Breaking change. Pass through errors from librdkafka in BaseProducer::flush, StreamProducer::flush, and FutureProducer::flush.

  Thanks, [@​cjubb39].

• Breaking change. Only provide NaiveRuntime if the naive-runtime feature is enabled. This elides a dependency on futures-executor when the naive-runtime feature is disabled.

• Breaking change. Remove the deprecated StreamConsumer::start method. Use the more clearly named StreamConsumer::stream method instead.

• Breaking change. Rework the Headers trait to distinguish between headers with null values and headers with empty values. The Headers::get and Headers::get_as methods now return a Header struct with the following definition:

... (truncated)

Commits

• 4b09836 Cut line of changes for releasing 0.30.0
• 3775228 Fix doc comment regarding supported MSRV.
• 9bb52a8 Merge pull request #575 from fede1024/davidblewett/export
• 3b211c3 Re-export the bundled rdkafka-sys modules.
• 56b6096 Merge pull request #544 from fede1024/dependabot/cargo/zstd-sys-2.0.6zstd.1.5.2
• 0bfca69 Switch to basic nightly
• 68c7f4e Bump zstd-sys from 2.0.1+zstd.1.5.2 to 2.0.6+zstd.1.5.2
• 6a270d0 Merge pull request #570 from ClementTsang/update_ci_workflow
• 791f1ab Update util.rs
• 64ae0fe Update README.md
• Additional commits viewable in compare view

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