Release notes for 400

[martint]

No description provided.

[ebyhr]

# Hudi
* Hide Hive system schemas. ({issue}`14510`)

#14510

[huberty89]

# SPI
* Add `ConnectorAccessControl.checkCanGrantExecuteFunctionPrivilege` overload that needs to be implemented
  to allow views that use table functions. ({issue}`14191`)

#14191

[findepi]

Iceberg
* Prevent table corruption when changing table fails due to inability to release table lock
  from Hive metastore. ({issue}`14386`)

#14386

[hashhar]

# SQL Server
* Allow renaming column names containing special characters. ({issue}`14272`)

#14272

[sopel39]

General:
* Improve concurrency for large clusters. ({issue}`14395`)

#14395

[ebyhr]

# BigQuery
* Add support for [truncating tables](/sql/truncate). ({issue}`14494`)

#14494

[sopel39]

General:
* Print stage output buffer utilization in `EXPLAIN ANALYZE VERBOSE`. ({issue}`14396`)

#14396

[ebyhr]

# Iceberg
* Fix failure when reading a table with leading double slash in the metadata location. ({issue}`14299`)

#14389

[findepi]

# Delta Lake
* Prevent coordinator out-of-memory failure when querying large number of tables in a short period of time. ({issue}`14571`)

#14571

[ebyhr]

# Hive
* Respect `hive.metastore.thrift.delete-files-on-drop` config property for dropping partitions. ({issue}`13545`)

#13822

[findepi]

Iceberg
* Reduce query latency when querying table with large number of files. ({issue}`14504`)

#14504 #14004