KAFKA-20173: Propagate headers into serde 8/N (#21967)

KAFKA-20173: Propagate headers into serde 9/N (#21969)

MINOR: Simplify inheritance for MeteredTimestampedWindowStoreWithHeaders (#21966)

KAFKA-20357 Unify method signature for retrieving config names across config classes (#21951)

KAFKA-15529 Fix race condition between isConsumed and position updates in AsyncKafkaConsumer fetch path (#21476)

KAFKA-20362 Auto-fill PR reviewers in PR description (#21928)

KAFKA-20194: Ensure backward compatibility for Session Stores (#21934)

KAFKA-20368 Use LinkedHashMap for deterministic metric tags order in RLMExpirationTask (#21931)

KAFKA-20344: Upgrade Jetty to 12.0.34 (trunk, 4.3, 4.2) (#21939)

KAFKA-20371: Add Iterable constructor to generated message collections (#21894)

MINOR: Fix typo 'reqeust' to 'request' in NetworkPartitionMetadataClientTest (#21945)

MINOR: Fix headers in KTableMapValues and KTableTransformValues (#21835)

KAFKA-20173: Propagate headers into serde 7/N (#21851)

KAFKA-20173: Ensure Metered window-stores pass headers correctly (#21936)

KAFKA-20194: Ensure backward compatibility for Windowed Store (#21922)