Change the verify for season_calendar_season_id_fkey

It failed in build.opensuse.org; possibly the view in information_scheme
is different.

verify/season_calendar_season_id_fkey.sql

@@ -3,14 +3,12 @@
 begin;
 
 select 1/count(*)
-from information_schema.constraint_column_usage
-where table_catalog = 'camper'
-  and table_schema = 'camper'
-  and table_name = 'season'
-  and column_name = 'season_id'
-  and constraint_catalog = 'camper'
-  and constraint_schema = 'camper'
-  and constraint_name = 'season_calendar_season_id_fkey'
+from pg_constraint
+where conrelid = 'camper.season_calendar'::regclass
+  and conname = 'season_calendar_season_id_fkey'
+  and contype = 'f'
+  and connamespace = 'camper'::regnamespace
+  and pg_get_constraintdef(oid) = 'FOREIGN KEY (season_id) REFERENCES camper.season(season_id)'
 ;
 
 rollback;