Update spin2cpp with test fixes

totalspectrum · totalspectrum · commit 616d75bff1dc · 2023-09-15T05:49:20.000-03:00
diff --git a/spin2cpp b/spin2cpp
@@ -1 +1 @@
-Subproject commit 17a94e6d71f8249e94863e381c9764265b490dfc
+Subproject commit 3e18b199437c94cee23cf2d3db812568f42ce05d
