Bump bazel version to 1.0.0

Change-Id: I8faff1ba385f746c413083d149d3d82e16eeeefd
diff --git a/.bazelversion b/.bazelversion
index 25939d3..3eefcb9 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-0.29.1
+1.0.0