v2.2.3

This is just the same as verison 2.2.2, but re-released with a new version number because the v2.2.2 release as published originally contained the 2.2.0 binaries instead of the correct 2.2.2 ones.

If you have downloaded version 2.2.2, and codeql --version correctly identifies itself as being that version, you don't need to upgrade to 2.2.3.