Update hacking for Focal

As per victoria cycle testing runtime and community goal[1]
we need to migrate upstream CI/CD to Ubuntu Focal(20.04).

This bumps hacking to 3.2.0 in order to work with focal, disabling W504
to align with neutron (W503 is enabled in this version)

Story: #2007865
Task: #40199

[1] https://governance.openstack.org/tc/goals/selected/victoria/migrate-ci-cd-jobs-to-ubuntu-focal.html

Change-Id: Ic7a6da941172aae6dc504eb377c3e94de4805a89
diff --git a/test-requirements.txt b/test-requirements.txt
index 6cbe947..bf1c626 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking<0.13,>=0.12.0 # Apache-2.0
+hacking>=3.2.0,<3.3.0 # Apache-2.0
 
 coverage!=4.4,>=4.0 # Apache-2.0
 flake8-import-order==0.12 # LGPLv3