chore(ci): Improve coverage performance (#3825)

Author: khvn26

api/.env-ci

@@ -2,3 +2,4 @@ DATABASE_URL=postgresql://postgres:postgres@localhost:5432/postgres
 ANALYTICS_DATABASE_URL=postgres://postgres:postgres@localhost:5432/analytics
 PYTEST_ADDOPTS=--cov . --cov-report xml -n auto --dist worksteal
 GUNICORN_LOGGER_CLASS=util.logging.GunicornJsonCapableLogger
+COVERAGE_CORE=sysmon