Merge pull request github#6147 from AlexDenisov/adjust_test_expectation

C++: Adjust test expectations after frontend upgrade

Author: igfoo

cpp/ql/test/library-tests/ir/ir/PrintAST.expected

@@ -5925,7 +5925,7 @@ ir.cpp:
 #  705|     getStmt(0): [ReturnStmt] return ...
 #  705|       getExpr(): [ConditionalExpr] ... ? ... : ...
 #  705|           Type = [UnknownType] unknown
-#  705|           ValueCategory = prvalue
+#  705|           ValueCategory = prvalue(load)
 #  705|         getCondition(): [LTExpr] ... < ...
 #  705|             Type = [UnknownType] unknown
 #  705|             ValueCategory = prvalue