Update exprtk ref.

highperformancecoder · highperformancecoder · commit d0fe8e9070d9 · 2024-10-29T17:27:16.000+11:00
diff --git a/exprtk b/exprtk
@@ -1 +1 @@
-Subproject commit f46bffcd6966d38a09023fb37ba9335214c9b959
+Subproject commit 34b57943392fa24d182ce4b87624df555cf285be
