update travis/pecl

diff --git a/travis/pecl b/travis/pecl
index 0815aa6d8727870e6bf8409700925abfaaf2b723..6b7c11b05020541819dbd501dea52d3e2d04aa1e 160000 (submodule)
--- a/travis/pecl
+++ b/travis/pecl
@@ -1 +1 @@
-Subproject commit 0815aa6d8727870e6bf8409700925abfaaf2b723
+Subproject commit 6b7c11b05020541819dbd501dea52d3e2d04aa1e