Log Message:
statzone: update to 1.1.1.

StatZone 1.1.1 (2021-11-16)

- Switch to using nullptr instead of NULL
- Fix erroneous comment about timer value in summary()
- Remove code to get zone file size, it's unused
- Update the arpa.zone copy used for testing
- Add SPDX short license identifier in source file
- Use CMAKE_CXX_STANDARD instead of hardcoding compiler flags
- Remove dependency on uthash, it is not used anymore
- Switch to using getline(3) instead of fgets(3)