update pjproject

Change-Id: I18622e6064494c19952ddafc21d81a40da841cc7
diff --git a/dependencies/pjproject b/dependencies/pjproject
index 1489db0..311bd01 160000
--- a/dependencies/pjproject
+++ b/dependencies/pjproject
@@ -1 +1 @@
-Subproject commit 1489db073be280629e41d387c1c2561f20b0bfb3
+Subproject commit 311bd018fc07aaf62d4c2d2494e08b5ee97e6846