Upgraded bazel-starlib and added custom workspace name to workspace (#23)

snippet generation.

release/BUILD

diff --git a/release/BUILD b/release/BUILD
index 1515eab..670f1e7 100644
--- a/release/BUILD
+++ b/release/BUILD
@@ -11,6 +11,7 @@
 generate_workspace_snippet(
     name = "generate_workspace_snippet",
     template = "workspace_snippet.tmpl",
+    workspace_name = "buildifier_prebuilt",
 )
 
 generate_release_notes(