editoast: use pooling for amqp #12804

Job	Run time
check_commits	7s
check_railjson_generator	1m 50s
check_generated_railjson_sync	21s
build (core-build, core)	2m 20s
Check final newline	7s
build (editoast, editoast-test)	20m 51s
check_infra_schema_sync	15s
build (gateway-test, gateway-standalone, gateway-front)	2m 31s
check_integration_tests	1m 25s
build (front-build, front-tests, front-devel, front-nginx)	2m 45s
check_osrd_schema	44s
build (osrdyne, osrdyne-test)	25s
check_reuse_compliance	8s
check_toml	5s
check_editoast_tests	6m 16s
check_editoast_lints	9m 11s
check_editoast_openapi	1m 10s
check_core	3m 59s
check_front_rtk_sync	1m 45s
check_gateway	3m 14s
check_front	2m 31s
check_osrdyne	3m 5s
integration_tests	8m 33s
	1h 13m 38s

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