Update changelog for v4.104.0

[github-actions]

4.104.0 - 2026-08-06

Fixed

• kafka: Fixed incorrect validation of max_in_flight_requests with idempotent_write enabled, which was causing silent failures instead of configuration errors. (@prakhargarg105, #4645)
• oracledb_cdc: Improved Oracle CDC snapshot handling by skipping unnecessary checkpointing during snapshot reads. (@josephwoodward, #4670)
• redpanda: Fixed redpanda_lag metric name to remain consistent when unordered_processing is enabled, preventing silent metric name changes that broke existing dashboards and alerts. (@prakhargarg105, #4664)
• oracledb_cdc: Derive identical message schemas from catalog and driver meta. (@Jeffail, #4661)

Changed

• s3: Added handling for S3 TestEvent messages to prevent message redelivery and improved logging for misconfigured bucket events. (@josephwoodward, #4667)

Added

• oracledb_cdc: Support the ability to configure a log miner session age @josephwoodward, #4673)