[NPC Handins] Fix MultiQuest Handins (#4651)

* [NPC Handins] Fix multi-quest handins

* Update linux-build.sh

utils/scripts/build/linux-build.sh

@@ -55,6 +55,7 @@ echo "# Running shared_memory"
 
 echo "# Running NPC hand-in tests"
 ./bin/zone tests:npc-handins 2>&1 | tee test_output.log
+./bin/zone tests:npc-handins-multiquest 2>&1 | tee -a test_output.log
 
 if grep -E -q "QueryErr|Error" test_output.log; then
     echo "Error found in test output! Failing build."