resolve_callback_unit_test - fix bugprone-macro-parentheses warning

Fixes:
  packages/modules/DnsResolver/resolv_callback_unit_test.cpp:
  47:67: error: macro argument should be enclosed in parentheses [bugprone-macro-parentheses,-warnings-as-errors]

    GTEST_LOG_(INFO) << "Skip. Required API version: " << version << "\n"; \
                                                          ^
                                                          (      )

Test: builds
Bug: 153035880
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Icb925cbefc5297ba2b1957d278ba9409bc28688b