ftbfs: use UTF-8 encoding for the database

Fixes crashes when encountering UTF-8 bug titles.

web/cgi-bin/ftbfs.cgi

@@ -45,6 +45,7 @@ class AttrDict(dict):
 class Db:
     def __init__(self, database):
         self.conn = psycopg2.connect(database)
+        self.conn.set_client_encoding('utf-8')
         self.cursor = self.conn.cursor()
 
     def query(self, query, cols, **parameters):