deskutils/taskwarrior: Update to version 2.6.1
- TW #2619 Fish autocompletion fails when completing tag removal
- TW #2620 Old-style context definition should only be interpreted as read context.
- TW #2622 Tags and dependencies appear as orphaned UDAs.
- TW #2626 Waiting report lists deleted and/or completed tasks.
- TW #2629 New-style context definition should take precedence over old-style even if the new-style is an empty string.
- TW #2632 Cannot build on Cygwin
- TW #2639 Unable to use ranges for some tasks with IDs above 1000.