python3Packages.apache-beam: fix build

Package was recently marked broken by https://github.com/NixOS/nixpkgs/commit/f8264a5b1e7832d93d8a22816f5133ff891724b6.

pkgs/development/python-modules/apache-beam/default.nix

@@ -200,6 +200,8 @@ buildPythonPackage rec {
     "test_get_output_batch_type"
     "test_pformat_namedtuple_with_unnamed_fields"
     "test_row_coder_fail_early_bad_schema"
+    # See https://github.com/apache/beam/issues/26004.
+    "test_batch_encode_decode"
   ];
 
   meta = with lib; {
@@ -207,6 +209,5 @@ buildPythonPackage rec {
     homepage = "https://beam.apache.org/";
     license = licenses.asl20;
     maintainers = with maintainers; [ ndl ];
-    broken = true;
   };
 }