Update crate bsdiff

Author: bors

bs/di/bsdiff

@@ -6,3 +6,4 @@
 {"name":"bsdiff","vers":"0.1.5","deps":[],"cksum":"e77ad7397e20666421826788a5b0398bdbf1a8720e3d952c3e86cf34bd67f065","features":{},"yanked":false}
 {"name":"bsdiff","vers":"0.1.6","deps":[],"cksum":"53a5456cea81693e6d82a95ab193fdaca148588aa7665b2b05d51bb487b08e91","features":{},"yanked":false}
 {"name":"bsdiff","vers":"0.2.0","deps":[],"cksum":"f7f2e6c4f2a017f63b5a1fd7cc437f061b53a3e890bcca840ef756d72f6b72f2","features":{},"yanked":false}
+{"name":"bsdiff","vers":"0.2.1","deps":[],"cksum":"b6709158fe6ca66c1f32eb27b4ae5997c67b0df350ae185831233af3e7a91213","features":{},"yanked":false,"rust_version":"1.59"}