postgresql_10: 10.15 -> 10.16

Release notes: https://www.postgresql.org/docs/10/release-10-16.html

pkgs/servers/sql/postgresql/default.nix

@@ -210,9 +210,9 @@ in self: {
   };
 
   postgresql_10 = self.callPackage generic {
-    version = "10.15";
+    version = "10.16";
     psqlSchema = "10.0"; # should be 10, but changing it is invasive
-    sha256 = "0zhzj9skag1pgqas2rnd217vj41ilaalqna17j47gyngpvhbqmjr";
+    sha256 = "1cvv8qw0gkkczqhiwx6ns7w88dwkvdz4cvb2d4ff14363f5p2p53";
     this = self.postgresql_10;
     thisAttr = "postgresql_10";
     inherit self;