pw_presubmit: Use "blocklist" in .pylintrc
pw_presubmit: Use "blocklist" in .pylintrc

Change "blacklist" to "blocklist" in .pylintrc.

Change-Id: I7c9250bf8f5026ab460f79012822e7473f04a932
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/20720
Reviewed-by: Wyatt Hepler <cca3bedb37979eacd157a9bceb473582df8aea1e@google.com>
Commit-Queue: Rob Mohr <d07614a8a0b466db08f68224f87d738b0f9615cf@google.com>

google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed,google/pigweed