configs stdlib: Update checkpoint resource for riscv-hello

This change updates the riscv-hello-restore-checkpoint.py script's
checkpoint for one compatible with v23

Change-Id: Idee262491db45049d9afe69190bc8890d75c8cdf
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/68337
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

configs/example/gem5_library/checkpoints/riscv-hello-restore-checkpoint.py

@@ -90,7 +90,7 @@ board = SimpleBoard(
 board.set_se_binary_workload(
     # the workload should be the same as the save-checkpoint script
     Resource("riscv-hello"),
-    checkpoint=Resource("riscv-hello-example-checkpoint-v22-1"),
+    checkpoint=Resource("riscv-hello-example-checkpoint-v23"),
 )
 
 simulator = Simulator(