Add Trino 416 release notes

Author: colebow

docs/src/main/sphinx/release.rst

@@ -10,6 +10,7 @@ Release notes
 .. toctree::
     :maxdepth: 1
 
+    release/release-416
     release/release-415
     release/release-414
     release/release-413

docs/src/main/sphinx/release/release-416.md

@@ -0,0 +1,12 @@
+# Release 416 (3 May 2023)
+
+## General
+
+* Improve performance of partitioned `INSERT`, `CREATE TABLE AS .. SELECT`, and
+  `EXECUTE` statements when the source table statistics are missing or 
+  inaccurate. ({issue}`16802`)
+* Improve performance of `LIKE` expressions that contain `%`. ({issue}`16167`)
+
+## Hive connector
+
+* Reduce coordinator memory usage when file metadata caching is enabled. ({issue}`17270`)