Skip cmake_snapshot_test(s)

These tests fail on sdk-sdk_mac-trunk_staging because this feature is
not intended to run outside of Linux. Let's skip these tests for now
until we figure out how to disable snapshot feature properly.

Bug: 339782737
Test: go test
Change-Id: Ibe70a0e3dc92262c78ce9e3a8af58f2da3bfeda2