feat: merge-train/barretenberg (#15941)

See
[merge-train-readme.md](https://github.com/AztecProtocol/aztec-packages/blob/next/.github/workflows/merge-train-readme.md).

BEGIN_COMMIT_OVERRIDE
chore: echo a message when script detects no vk change (#15944)
END_COMMIT_OVERRIDE

---------

Co-authored-by: AztecBot <[email protected]>
Co-authored-by: Jonathan Hao <[email protected]>

Author: 3 people

barretenberg/cpp/scripts/test_civc_standalone_vks_havent_changed.sh

@@ -11,7 +11,8 @@ cd ..
 # - Generate a hash for versioning: sha256sum bb-civc-inputs.tar.gz
 # - Upload the compressed results: aws s3 cp bb-civc-inputs.tar.gz s3://aztec-ci-artifacts/protocol/bb-civc-inputs-[hash(0:8)].tar.gz
 # Note: In case of the "Test suite failed to run ... Unexpected token 'with' " error, need to run: docker pull aztecprotocol/build:3.0
-pinned_civc_inputs_url="https://aztec-ci-artifacts.s3.us-east-2.amazonaws.com/protocol/bb-civc-inputs-20e6f0d0.tar.gz"
+pinned_short_hash="20e6f0d0"
+pinned_civc_inputs_url="https://aztec-ci-artifacts.s3.us-east-2.amazonaws.com/protocol/bb-civc-inputs-${pinned_short_hash}.tar.gz"
 
 function compress_and_upload {
     # 1) Compress the results
@@ -73,7 +74,11 @@ export -f check_circuit_vks
 ls "$inputs_tmp_dir"
 
 if [[ "${1:-}" == "--update_fast" ]]; then
-  parallel -v --line-buffer --tag check_circuit_vks {} --update_inputs ::: $(ls "$inputs_tmp_dir") ||  compress_and_upload $inputs_tmp_dir
+  parallel -v --line-buffer --tag check_circuit_vks {} --update_inputs ::: $(ls "$inputs_tmp_dir") \
+    && echo "No VK changes detected. Short hash is: ${pinned_short_hash}" \
+    || compress_and_upload $inputs_tmp_dir
 else
-  parallel -v --line-buffer --tag check_circuit_vks {} ::: $(ls "$inputs_tmp_dir")
+  parallel -v --line-buffer --tag check_circuit_vks {} ::: $(ls "$inputs_tmp_dir") \
+    && echo "No VK changes detected. Short hash is: ${pinned_short_hash}" \
+    || echo "VK changes detected. Please re-run the script with --update_fast or --update_inputs"
 fi