Add Trino 478 release notes

docs/src/main/sphinx/release.md

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 ```{toctree}
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+release/release-478
 release/release-477
 release/release-476
 release/release-475

docs/src/main/sphinx/release/release-478.md

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+# Release 478 (29 Oct 2025)
+
+## General
+
+* Include lineage information for columns used in `UNNEST` expressions. ({issue}`16946`)
+* Add support for limiting which retry policies a user can select. This can be configured using
+  the `retry-policy.allowed` option. ({issue}`26628`)
+* Add support for loading plugins from multiple directories. ({issue}`26855`)
+* Allow dropping catalogs that failed to load correctly. ({issue}`26918`)
+* Improve performance of queries with an `ORDER BY` clause using `varchar` or `varbinary` types. ({issue}`26725`)
+* Improve performance of `MERGE` statements involving a `NOT MATCHED` case. ({issue}`26759`)
+* Improve performance of queries involving `JOIN` when the join spills to disk. ({issue}`26076`)
+* Fix potential incorrect results when query uses `row` type. ({issue}`26806`)
+* Include catalogs that failed to load in the `metadata.catalogs` table. ({issue}`26918`)
+* Fix `EXPLAIN ANALYZE` planning so that it executes with the same plan as would be used to execute the query
+  being analyzed. ({issue}`26938`)
+* Fix incorrect results when using logical navigation function `FIRST` in row pattern recognition. ({issue}`26981`)
+
+## Security
+
+* Propagate `queryId` to the [Open Policy Agent](/security/opa-access-control)
+  authorizer. ({issue}`26851`)
+
+## Docker image
+
+* Run Trino on JDK 25.0.0 (build 36). ({issue}`26693`)
+
+## Delta Lake connector
+
+* Fix failure when reading a `map(..., json)` column when the map item value is `NULL`. ({issue}`26700`)
+* Deprecate the `gcs.use-access-token` configuration property. Use `gcs.auth-type` instead. ({issue}`26681`)
+
+## Google Sheets connector
+
+* Fix potential query failure when the `gsheets.delegated-user-email` configuration property
+  is used. ({issue}`26501`)
+
+## Hive connector
+
+* Add support for reading encrypted Parquet files. ({issue}`24517`, {issue}`9383`)
+* Deprecate the `gcs.use-access-token` configuration property. Use `gcs.auth-type` instead. ({issue}`26681`)
+* Improve performance of queries using complex predicates on `$path` column. ({issue}`27000`)
+* Fix writing ORC files to ensure that dates and timestamps before `1582-10-15` are read correctly by Apache Hive. ({issue}`26507`)
+
+## Hudi connector
+
+* Deprecate the `gcs.use-access-token` configuration property. Use `gcs.auth-type` instead. ({issue}`26681`)
+
+## Iceberg connector
+
+* Improve performance when writing sorted tables and `iceberg.sorted-writing.local-staging-path`
+  is set. ({issue}`24376`)
+* Return execution metrics while running the `remove_orphan_files` command. ({issue}`26661`)
+* Deprecate the `gcs.use-access-token` configuration property. Use `gcs.auth-type` instead. ({issue}`26681`)
+* Collect distinct values count on all columns when replacing tables. ({issue}`26983`)
+* Fix failure due to column count mismatch when executing the `add_files_from_table`
+  procedure. ({issue}`26774`)
+* Fix failure when executing `optimize_manifests` on tables without a snapshot. ({issue}`26970`)
+* Fix incorrect results when reading Avro files migrated from Hive. ({issue}`26863`)
+* Fix failure when executing `SHOW CREATE SCHEMA` on a schema with unsupported properties
+  with REST, Glue or Nessie catalog. ({issue}`24744`)
+* Fix failure when running `EXPLAIN` or `EXPLAIN ANALYZE` on `OPTIMIZE` command. ({issue}`26598`)
+
+## Kafka connector
+
+* Fix failure when filtering partitions by timestamp offset. ({issue}`26787`)
+
+## SPI
+
+* Remove default implementation from `Connector.shutdown()`. ({issue}`26718`)
+* Remove the deprecated `ConnectorSplit.getSplitInfo` method. ({issue}`27063`)
+* Deprecate `io.trino.spi.type.Type#appendTo` method. ({issue}`26922`)