Document EFCore.PG targeting PostgreSQL version 16 by default

See npgsql/efcore.pg#3798

Author: roji

conceptual/EFCore.PG/release-notes/11.0.md

@@ -90,3 +90,12 @@ For more details, see the [temporal constraints documentation](../misc/temporal-
 ## Other new features
 
 * Added `EF.Functions.IntersectsBbox(geom1, geom2)` for expressing [the PostGIS `&&` operator](https://postgis.net/docs/geometry_overlaps.html). Thanks to [@bjornharrtell](https://github.com/bjornharrtell) for this contribution!
+
+## Breaking changes
+
+* EF now targets PostgreSQL 16 by default, taking advantage of newer features (previously, PostgreSQL 14 was targeted). You can set the targeted PostgreSQL version when configuring your context:
+
+```c#
+protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+    => optionsBuilder.UseNpgsql("<CONNECTION STRING>",s => s.SetPostgresVersion(14, 0));
+```