Merge branch '21.2_DFAT_NewInputs' into '21.2'

Updating input file for DerivationFrameworkAnalysisTests

See merge request atlas/athena!30193

PhysicsAnalysis/DerivationFramework/DerivationFrameworkAnalysisTests/test/test_TruthDerivationTest.sh

@@ -6,8 +6,9 @@
 # art-include: 21.2/AnalysisBase
 # art-include: 21.2/AthAnalysis
 # art-output: test_histograms.root
-# art-input: mc15_13TeV:mc15_13TeV.410470.PhPy8EG_A14_ttbar_hdamp258p75_nonallhad.deriv.DAOD_TRUTH3.e6337_e5984_p3655
-# art-input-nfiles: 1
 
-TruthDerivationTester --input ${ArtInFile} --output test_histograms.root --nevents -1
+art.py download --nightly-release 21.2 --project AthDerivation --platform x86_64-slc6-gcc62-opt DerivationFrameworkMCTruthART test_mc15TRUTH3.sh
+inputFile=./ref-*/DAOD_TRUTH3.art.pool.root
+
+TruthDerivationTester --input ${inputFile} --output test_histograms.root --nevents -1
 echo "art-result: $?"