Make test_CaloRecGPU_4_2_0_abs_run4 executable
Should fix failing ART test
2025-03-13 05:42:58,470 art.grid.job ERROR T00 /cvmfs/atlas-nightlies.cern.ch/repo/sw/main_Athena_x86_64-el9-gcc13-opt/2025-03-12T2101/Athena/25.0.27/InstallArea/x86_64-el9-gcc13-opt/src/Calorimeter/CaloRecGPU/test/test_CaloRecGPU_4_2_0_abs_run4.py is NOT executable.