update redpanda appVersion from v23.3.3 to v23.3.4

[github-actions]

Bug Fixes

• Fix the starter code for Rust projects in rpk transform init by @rockwotj in #16194
• Report runtime public metrics by task queue for all cores, not just core 0 by @rockwotj in #16203
• #16271 Fixes a bug that would previously cause read replicas to report the wrong value for the redpand_kafka_max_offset metric. by @andrwng in #16272

Improvements

• smaller memory footprint when using with large number of topics with small partition count by @mmaslankaprv in #16266
• PR #16182 [v23.3.x] Rename max_client_count to max_connection_count by @travisdowns
• PR #16195 [v23.3.x] Introduce wasm::logger by @oleiman
• PR #16216 [v23.3.x] Introduced partition shutdown watchdog timer by @mmaslankaprv
• PR #16236 [v23.3.x] c/topics_dispatcher: do not guesstimate leader ids by @mmaslankaprv
• PR #16255 [v23.3.x] admin api: skip partition info in /brokers end point by @bharathv

Full Changelog: redpanda-data/redpanda@v23.3.3...v23.3.4