Increase atol for test_noncontiguous_samples_nn_functional_conv_transpose3d_cuda_float32 (#80518)
This test is currently flaky due to randomly generated inputs sometimes producing results very slightly outside the specified tolerance. For example:
```
Mismatched elements: 1 / 2744 (0.0%)
Greatest absolute difference: 0.0001068115234375 at index (0, 7, 2, 3, 4) (up to 0.0001 allowed)
Greatest relative difference: 3.0445612311553214e-05 at index (0, 7, 2, 3, 4) (up to 1.3e-06 allowed)
```
Fixes #79509
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80518
Approved by: https://github.com/jbschlosser
