Bump bazel version to 0.29.0

Change-Id: I2ae0f484187411c14471ddc7c9f19c83b075ec7f
diff --git a/jenkins-docker/slave-bazel-nocache/Makefile b/jenkins-docker/slave-bazel-nocache/Makefile
index 882cc74..83111ee 100644
--- a/jenkins-docker/slave-bazel-nocache/Makefile
+++ b/jenkins-docker/slave-bazel-nocache/Makefile
@@ -1,6 +1,6 @@
 NO_CACHE=false
 IMAGE=gerritforge/gerrit-ci-slave-bazel:debian-stretch-nocache
-BAZEL_VER=0.26.1
+BAZEL_VER=0.29.0
 BUILDIFIER_VER=0.26.0
 BAZELISK_VER=0.0.7
 NODE_VER=10