update redpanda appVersion from v23.2.15 to v23.2.16

[github-actions]

Bug Fixes

• #14799 Fix a bug where producer would get INVALID_PRODUCER_ID_MAPPING if the leader of the transaction coordinator partition would change. by @nvartolomei in #14801
• removed assumptions of no gaps and alignment from segment_meta_cstore by @andijcr in #14954
• PR #14851 [v23.2.x] cloud_storage_clients: Fix xml parsing when searching for error code in response by @abhijat
• PR #14934 [v23.2.x] tests: retry on timeout in partition balancer test by @mmaslankaprv
• PR #14944 [v23.2.x] rpk: add no-browser to cloud login by @r-vasquez
• PR #14952 [v23.2.x] cloud_storage: Add client address to fetch and log reader config by @abhijat
• PR #14958 [v23.2.x] cloud_storage: Log client address in batch parser by @abhijat

Improvements

• Schema Registry: Improve compatibility of reading schemas that were created by another registry. by @BenPope in #14875
• #14832 Redpanda: Lower the log level if GNUTLS_E_DECRYPTION_FAILED is encountered. by @BenPope in #14868
• redpanda: Make redpanda_cpu_busy_seconds_total metric a counter instead of a gauge. by @BenPope in #14926
  Full Changelog: redpanda-data/redpanda@v23.2.15...v23.2.16

[alejandroEsc]

lgtm