Client CPP 3.4.1

What's Changed

• Fix Protobuf symbols not found in libpulsarwithdeps.a when building on macOS by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/354
• Fix the flush callback might be called repeatedly by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/353
• Log topic lookup result by @erobot in https://github.com/apache/pulsar-client-cpp/pull/351
• Fix bad_weak_ptr when close a ClientConnection during construction by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/350
• Fix crash when removing connection from the pool by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/347
• Fix lazy partitioned producer might send duplicated messages by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/342
• Use absolute path to find credential files in unit tests by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/340
• Fix close() returns ResultAlreadyClosed after unsubscribe or close by @BewareMyPower in https://github.com/apache/pulsar-client-cpp/pull/338

Full Changelog: https://github.com/apache/pulsar-client-cpp/compare/v3.4.0...v3.4.1