Added two test exceptions

Author: oleksandr-pavlyk

tests/skipped_tests_gpu.tbl

@@ -1169,6 +1169,8 @@ tests/third_party/cupy/math_tests/test_floating.py::TestFloating::test_ldexp
 tests/third_party/cupy/math_tests/test_floating.py::TestFloating::test_nextafter_combination
 tests/third_party/cupy/math_tests/test_floating.py::TestFloating::test_nextafter_float
 tests/third_party/cupy/math_tests/test_floating.py::TestFloating::test_signbit
+tests/third_party/cupy/math_tests/test_misc.py::TestMisc::test_absolute_negative
+tests/third_party/cupy/math_tests/test_misc.py::TestMisc::test_sign_negative
 tests/third_party/cupy/math_tests/test_misc.py::TestMisc::test_clip1
 tests/third_party/cupy/math_tests/test_misc.py::TestMisc::test_clip2
 tests/third_party/cupy/math_tests/test_misc.py::TestMisc::test_clip3