Update protobuf to 2.27.1

Test: cd external/rust/crates && atest --host -c
Change-Id: Iaae5fc30f1bd87b2d4a92ee1ae07bc18e1bc50d4
diff --git a/src/lazy.rs b/src/lazy.rs
index 5b01502..3575dd0 100644
--- a/src/lazy.rs
+++ b/src/lazy.rs
@@ -56,13 +56,14 @@
 
 #[cfg(test)]
 mod test {
-    use super::Lazy;
     use std::sync::atomic::AtomicIsize;
     use std::sync::atomic::Ordering;
     use std::sync::Arc;
     use std::sync::Barrier;
     use std::thread;
 
+    use super::Lazy;
+
     #[test]
     fn many_threads_calling_get() {
         const N_THREADS: usize = 32;