Update LibLouis to 3.38.0 (#20269)
Part of #20103
### Summary of the issue:
Liblouis 3.38.0 was released, and NVDA's next release should be kept in
sync.
### Description of how this pull request fixes the issue:
Update LibLouis.
### Testing strategy:
Verified that new LibLouis functions correctly and new tables appear.
### Known issues with pull request:
None known
