Release v19.53.2

Fixed

• A child join applied by the in-memory storage, which Cratis.Chronicle.Testing and in-memory kernels use, now updates every matching child in place, as the MongoDB and SQL sinks do. Before, it replaced the whole read model with the joined child alone, dropping the root's other properties and sibling children. (#4531)
• Regression specifications confirm that a projection combining From with FromAll materializes an instance for an event from an unrelated event source the same way in memory and in a running kernel. (#4266)