ci(bigquery): disable two failing tests until WIF auth is worked out

ibis/backends/bigquery/tests/system/test_client.py

@@ -10,6 +10,7 @@
 import pyarrow as pa
 import pytest
 import pytz
+from google.api_core.exceptions import Forbidden
 
 import ibis
 import ibis.expr.datatypes as dt
@@ -234,6 +235,7 @@ def test_exists_table_different_project(con):
     assert "foobar" not in con.list_tables(database=dataset)
 
 
+@pytest.mark.xfail(raises=Forbidden, reason="WIF auth not entirely worked out yet")
 def test_multiple_project_queries_execute(con):
     posts_questions = con.table(
         "posts_questions", database="bigquery-public-data.stackoverflow"

ibis/backends/bigquery/tests/system/udf/test_udf_execute.py

@@ -5,6 +5,7 @@
 import pandas as pd
 import pandas.testing as tm
 import pytest
+from google.api_core.exceptions import Forbidden
 from pytest import param
 
 import ibis
@@ -101,6 +102,7 @@ def my_str_len(s: str) -> float:
     assert con.execute(expr) == 8.0
 
 
+@pytest.mark.xfail(raises=Forbidden, reason="WIF auth not entirely worked out yet")
 def test_udf_libraries(con):
     @udf.scalar.python(
         # whatever symbols are exported in the library are visible inside the