Note: 0.15.9 was yanked, so we compare to the previous release 0.15.8

What's Changed

• Cap log level to debug on web by @deuszx in https://github.com/linera-io/linera-protocol/pull/5177
• Disable memory profiling by @ndr-ds in https://github.com/linera-io/linera-protocol/pull/5181
• Add liveness probes to proxy/shards (#5169) by @ndr-ds in https://github.com/linera-io/linera-protocol/pull/5182
• feat(helm): Use separate image for block-exporter by @eldios in https://github.com/linera-io/linera-protocol/pull/5186
• Background sync of received certificates fix by @deuszx in https://github.com/linera-io/linera-protocol/pull/5163
• Backport: Move TaskProcessor-related types to linera_base by @bart-linera in https://github.com/linera-io/linera-protocol/pull/5180
• Fix Docker Compose validator (backport of #5184) by @ndr-ds in https://github.com/linera-io/linera-protocol/pull/5185
• Slightly less logs in the indexer by @deuszx in https://github.com/linera-io/linera-protocol/pull/5192
• Stop treating message senders as dependencies of a block. by @deuszx in https://github.com/linera-io/linera-protocol/pull/5190