Fix issue in conftest.py

This is breaking the array-api-compat CI, so we need to merge this
straightaway.

Author: asmeurer

conftest.py

@@ -155,7 +155,7 @@ def pytest_collection_modifyitems(config, items):
 
     disabled_exts = config.getoption("--disable-extension")
     disabled_dds = config.getoption("--disable-data-dependent-shapes")
-    unvectorized_max_examples = math.ceil(math.log(config.getoption("--hypothesis-max-examples") or 50))
+    unvectorized_max_examples = math.ceil(math.log(int(config.getoption("--hypothesis-max-examples")) or 50))
 
     # 2. Iterate through items and apply markers accordingly
     # ------------------------------------------------------
@@ -239,4 +239,4 @@ def pytest_collection_modifyitems(config, items):
             f"{f_bad_ids}\n"
             f"(xfails file: {xfails_file})\n"
             f"{bad_ids_end_msg}"
-        )
+        )