XFAIL numpy dev test failure

Author: asmeurer

numpy-dev-xfails.txt

@@ -32,3 +32,7 @@ array_api_tests/meta/test_hypothesis_helpers.py::test_symmetric_matrices
 # (https://github.com/data-apis/array-api-tests/issues/168)
 array_api_tests/test_statistical_functions.py::test_sum
 array_api_tests/test_statistical_functions.py::test_prod
+
+# The test suite cannot properly get the signature for vecdot
+# https://github.com/numpy/numpy/pull/26237
+array_api_tests/test_signatures.py::test_func_signature[vecdot]