postgresql11Packages.pipelinedb: mark as broken for PostgreSQL≠11

pkgs/servers/sql/postgresql/ext/pipelinedb.nix

@@ -34,6 +34,6 @@ stdenv.mkDerivation rec {
     license = licenses.asl20;
     platforms = postgresql.meta.platforms;
     maintainers = [ maintainers.marsam ];
-    broken = versionOlder postgresql.version "10";
+    broken = versions.major postgresql.version != "11";
   };
 }