Use new version of mpiFileUtils when available in nnf-mfu

[bdevcich]

mpiFileUtils latest release is from Feb 2022 and does not include our fixes to dcp to add UID/GID flags. Using the HEAD commit of mpiFileUtils is dangerous. When a new release drops, we need to update nnf-mfu to use that.

In the meantime, we have a forked version of mpiFileUtils so we can make a tag on a commit that we know works. nnf-mfu can then use that tag instead of pulling the latest from main. That work was done here.

I've created an issue in the mpiFileUtils repo asking about the next release.