openobserve: fix checkPhase on Darwin (#447421)

  checkFlags = [

    "--skip=handler::http::router::tests::test_get_proxy_routes"

    "--skip=tests::e2e_test"

    # test_export_operator unit test panics when run on the 0.14.7 release

    # see this issue for more details : https://github.com/NixOS/nixpkgs/issues/447106

    "--skip=tests::test_export_operator"

    "--skip=service::organization::tests::test_organization"

  ];