update numpy version used for benchmarking

(cherry picked from commit 6af5ddd)

Author: timfel

mx.graalpython/mx_graalpython_python_benchmarks.py

@@ -650,7 +650,7 @@ def _vmRun(self, vm, workdir, command, benchmarks, bmSuiteArgs):
 
 
 class NumPySuite(PySuite):
-    VERSION = "v1.16.4"
+    VERSION = "v1.23.5"
 
     PREREQUISITES = """
     setuptools==63.1.0