Format lib/BUILD with buildifier

Change-Id: I63db70e6e6f4da44a211621d8721ede66bce44bd
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

lib/BUILD

diff --git a/lib/BUILD b/lib/BUILD
index 0f09c1f..0c5c224 100644
--- a/lib/BUILD
+++ b/lib/BUILD
@@ -172,9 +172,9 @@
     testonly = 1,
     visibility = ["//visibility:public"],
     exports = [
-        "@mockito//jar",
         "@byte_buddy//jar",
         "@byte_buddy_agent//jar",
+        "@mockito//jar",
         "@objenesis//jar",
     ],
 )