toolchain-utils: update manifest when updating LLVM

BUG=b:234635394
TEST=./update_chromeos_llvm_hash_unittest.py

Change-Id: Iff52984a44b41b230a74ebef7b5f8dd25b581237
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/3852368
Tested-by: Adrian Dole <adriandole@google.com>
Commit-Queue: Adrian Dole <adriandole@google.com>
Reviewed-by: Jordan Abrahams-Whitehead <ajordanr@google.com>
Auto-Submit: Adrian Dole <adriandole@google.com>
Reviewed-by: Adrian Dole <adriandole@google.com>
2 files changed