Refresh fuzzer corpora for changes to split-handshake serialization.
Change-Id: I7922b4b26dabb6875e800472ee8453ca4a9922e0
Reviewed-on: https://boringssl-review.googlesource.com/c/32845
Reviewed-by: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>