chore(op-acceptance-tests): test limiting concurrency

Author: scharissis

.circleci/config.yml

@@ -1186,6 +1186,8 @@ jobs:
       image: ubuntu-2404:current
       docker_layer_caching: true # Since we are building docker images for components, we'll cache the layers for faster builds
     resource_class: xlarge
+    environment:
+      OP_ACCEPTOR_CONCURRENCY: 4 # limit concurrency to 4 to reduce strain on the CI runner
     steps:
       - checkout-from-workspace
       - unless: