libMesh Update (2021.12.15) and December 2021 News

[cticenhour]

A new libMesh made its way to the MOOSE master branch in December. For those using the conda packages, please perform

conda update --all

in your MOOSE conda environment. The appropriate moose-libmesh package version should be 2021.12.15. For those using the the libMesh submodule, please run in the moose/scripts directory

./update_and_rebuild_libmesh.sh

after updating your copy of MOOSE.

More details on the content of this update can be found in the December 2021 Newsletter. If issues are experienced in updating from earlier versions of the moose-libmesh package, please see the comment in #19532 for information on how to fix your environment.