update osm2pgsql (libosmium update and clubs)

Adds club key.

Fixes #725.

diff --git a/osm2pgsql b/osm2pgsql
index 28c6806a4b6e8287f13197700c19af789659d435..28ce89dd28c20d94a98e29f41b8e76cfc7b6b823 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit 28c6806a4b6e8287f13197700c19af789659d435
+Subproject commit 28ce89dd28c20d94a98e29f41b8e76cfc7b6b823