[postgres] Add postgresql 16 to find external-deps/PostgreSQLInternal.yaml

Tests: протестировано CI

Pull Request resolved: #465

Author: linuxnyasha

external-deps/PostgreSQLInternal.yaml

@@ -11,6 +11,7 @@ includes:
           - /usr/include/postgresql/13/server
           - /usr/include/postgresql/14/server
           - /usr/include/postgresql/15/server
+          - /usr/include/postgresql/16/server
           - /usr/local/include/postgresql/server  # FreeBSD
         path-suffixes:
           - pgsql/server         # postgresql-server-devel