fix proxy_build_from_pip_tests

.circleci/config.yml

@@ -2609,6 +2609,7 @@ jobs:
             pip install "pytest-mock==3.12.0"
             pip install "pytest-asyncio==0.21.1"
             pip install "mypy==1.18.2"
+            pip install apscheduler
       - run:
           name: Build Docker image
           command: |