[asset] fix: bump the timeout [(#4181)](GoogleCloudPlatform/python-do…

…cs-samples#4181)

fixes #4164

samples/snippets/quickstart_searchallresources_test.py

@@ -53,7 +53,7 @@ def test_search_all_resources(asset_dataset, capsys):
     # Dataset creation takes some time to propagate, so the dataset is not
     # immediately searchable. Need some time before the snippet will pass.
     @backoff.on_exception(
-        backoff.expo, (AssertionError), max_time=30
+        backoff.expo, (AssertionError), max_time=120
     )
     def eventually_consistent_test():
         quickstart_searchallresources.search_all_resources(scope, query=query)