Revert "Processing: Use `Bun.spawnSync` for `osmium`" #297

Job	Run time
setup_env / setup_env	15s
restart_services / check_config_changes / diff	4s
restart_services / restart_services	0s
deploy_app / diff_app / diff	5s
deploy_processing / diff_processing / diff	4s
deploy_processing / build_processing	2m 30s
deploy_app / build_app	0s
deploy_app / restart_app	0s
deploy_processing / restart_processing	22s
	3m 20s

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