Skip publicsuffix tests TestPublicSuffix, TestSlowPublicSuffix, and TestNumICANNRules

These tests are hardcoded by upstream to check against parts of the test data,
but break when the test data is regenerated from the latest publicsuffix data,
which is constantly changing.

This patch skips TestPublicSuffix, TestSlowPublicSuffix, and
TestNumICANNRules, which are all affected by this problem and resulted in test
failures.

Closes: #1089192