update osm2pgsql to 1.11.0

diff --git a/osm2pgsql b/osm2pgsql
index 415de9abdf2d003a5c0a0abe8e8fc139acacc2b5..cf66989fa2a47aa406f25c0be79e3b4e146284ee 160000 (submodule)
--- a/osm2pgsql
+++ b/osm2pgsql
@@ -1 +1 @@
-Subproject commit 415de9abdf2d003a5c0a0abe8e8fc139acacc2b5
+Subproject commit cf66989fa2a47aa406f25c0be79e3b4e146284ee