Update to Baselibs 8.4.0, Intel 2021.13

This fixes the bug found in v5.1.0 where Baselibs did not build FMS. This restores it.

We also move to Intel 2021.13 at NCCS (SLES 15), NAS, and GMAO desktops.

---

From CHANGELOG.md

Changed

• Update to Baselibs 8.4.0
  • Restore FMS build (was erroneously removed in 8.2.0)
  • Fixes for MPT and using icx/icpx at NAS
• Move to use Intel ifort 2021.13 on SLES 15 at NCCS, at NAS, and on GMAO Desktops

---

What's Changed

• Update to Baselibs 8.4.0, Intel 2021.13 by @mathomp4 in #126

Full Changelog: v5.1.0...v5.2.0