Make test_FTAG_grid test executable. Should hopefully solve
2023-12-21 04:27:53,611 art.grid.job ERROR T00 /cvmfs/atlas-nightlies.cern.ch/repo/sw/main_Athena_x86_64-el9-gcc13-opt/2023-12-20T2101/Athena/24.0.20/InstallArea/x86_64-el9-gcc13-opt/src/PhysicsAnalysis/JetTagging/FlavourTaggingTests/test/test_FTAG_grid.sh is NOT executable.
Drop tight memory requirement on test_FTAG_AOD_withtrackless_grid.sh which probably prevented to find any running site since introduced
