Upgrade oss-fuzz to fd15c6d57aa13667af2521daf6167a2d8cd2ecb7 am: ebda00b748 am: 83853d5c3c am: c85b7e55ec am: 771bcd4878

Original change: https://android-review.googlesource.com/c/platform/external/oss-fuzz/+/1854493

Change-Id: I19b73b74ac475ff8cb9f4be6a260564d97fac5bc