[boost] VS2022 release date is Nov 8

The Visual Studio 2022 (msvc-14.3) release date is Nov 8, which is right in the middle of our beta master freeze (Nov 3 - Nov 10). Since VS2022 is now RC2, which means that it won't change much if at all, we probably need to start testing our libraries with it now, so that the issues are ironed out before 1.78 beta.