feat: import os in options where used

Not transitively imported anymore in gaudi v36r14. Expected to resolve failures in https://eicweb.phy.anl.gov/EIC/benchmarks/reconstruction_benchmarks/-/pipelines/74372.

benchmarks/track_finding/options/track_reconstruction.py

+import os
+
 from Gaudi.Configuration import *
 
 from Configurables import ApplicationMgr, EICDataSvc, PodioOutput, GeoSvc