Update ihp-sg13g2/ibex metrics for higher diode count

Signed-off-by: Martin Povišer <povik@cutebit.org>

Author: povik

flow/designs/ihp-sg13g2/ibex/rules-base.json

@@ -44,7 +44,7 @@
         "compare": "<="
     },
     "detailedroute__antenna_diodes_count": {
-        "value": 32,
+        "value": 36,
         "compare": "<="
     },
     "finish__timing__setup__ws": {