Update Swedish spelling dictionary

Updates the spelling dictionary to the most resent version.
Improvements include:
Blocked a lot of compound words that often occur as misspellings of
other common words.
Improved support for three-way compounds. Removed a lot of uncommon words.

Change-Id: Idab76e00c9e8f304af674499f7ea8418ed958f5f
Reviewed-on: https://gerrit.libreoffice.org/7260
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>