Log Message:
lang/smlnj: Update to 110.99.6.1

Changelog:
[2024-10-25] Version 110.99.6.1 is released. This p[atch release fixes a serious \ 
bug in 110.99.6. See the README for details.
[2024-09-18] Version 110.99.6 is released. This version is primarily a bugfix \ 
release with some additional improvements. See the README for details.
[2024-03-14] Version 110.99.5 is released. This version is primarily a bugfix \ 
release with some additional improvements. See the README for details.
[2023-08-01] Version 110.99.4 is released. This version is primarily a bugfix \ 
release, but it does include a small number of enhancements as well as support \ 
for macOS 14 (Sonoma). See the README for details.