I upgraded boost-libs (1.71.0-4 -> 1.72.0-1) earlier today and libreoffice now crashes. It appears libreoffice needs old 1.71 version. I temporarily downgraded boost-libs back to 1.71 and libreoffice started up ok. Thus a recompile/repackage of libreoffice is needed?
libreoffice
/usr/lib/libreoffice/program/soffice.bin: error while loading shared libraries: libboost_locale.so.1.71.0: cannot open shared object file: No such file or directory
Yup libreoffice needs to be rebuilt. Libreoffice comes from Arch itself and I noticed that it just updated today as well (the boost stuff comes from Artix's own repos). Likely, you just need to wait for your arch mirrorlist to sync again and then the next update to the new libreoffice which should fix it.
Solved by latest upgrade for libreoffice- libreoffice-fresh-6.3.4-3.