Update FERRET

MOOSE changes frequently. Since FERRET is integrated into the Continuous-Integration and Verification Test Environment (CIVET, https://civet.inl.gov/), the MOOSE team may make periodic changes to FERRET to keep it up-to-date.

Therefore, to make sure your changes are not going to be made deprecated or conflict with newer commits of MOOSE, you will need to update your Conda environment as well as your local repository frequently to keep up with the remote.

To update the Conda environment, use

conda activate moose
conda update --all

To update FERRET, use

git pull
git submodule update --init --recursive

Then, recompile FERRET using

make -j N

Sometimes after updating FERRET and all submodules, you may get compile errors. Most likely that is due to stale objects floating around in the repository. To clean stale objects, make sure you have everything committed, and do

git submodule foreach --recursive git clean -xfd
git clean -xfd

After which you should be able to recompile FERRET

make -j N