Bump bazel version to 1.0.0

Change-Id: I530b094a9d91ac9a01f13898a4db65c53010d71d
diff --git a/.bazelversion b/.bazelversion
index 25939d3..3eefcb9 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-0.29.1
+1.0.0