tests: use force_str() in sql fts test (#36515)

tests/test_sql.py

@@ -14,6 +14,7 @@ from django.core.management import call_command
 
 from quixote import cleanup
 
+from wcs.qommon import force_str
 from wcs import formdef, publisher, fields
 from wcs.formdef import FormDef
 from wcs.formdata import Evolution
@@ -951,7 +952,7 @@ def test_sql_criteria_fts():
 
     # check unaccent
     user = sql.SqlUser()
-    user.name = u'Frédéric'.encode('utf-8')
+    user.name = force_str(u'Frédéric')
     user.store()
     t.user_id = user.id
     t.store()