bump sky130_klayout version

sky130/sky130.json

diff --git a/sky130/sky130.json b/sky130/sky130.json
index 750ab6a..c42a8f1 100644
--- a/sky130/sky130.json
+++ b/sky130/sky130.json
@@ -111,7 +111,7 @@
         "sky130_fd_bd_sram": "be33adbcf188fdeab5c061699847d9d440f7a084",
         "sky130_ml_xx_hd": "6eb3b0718552b034f1bf1870285ff135e3fb2dcb",
         "xschem_sky130": "2f994e35580020805be3e8fe01109a63da207e03",
-        "klayout_sky130": "5e6e2b29d2b9f8d0f2de1b5d5f649f33017dac75",
+        "klayout_sky130": "c4b125f216edda5d755e429cfe876855ff300974",
         "precheck_sky130": "5cb9874b640f386205ba033d8a1ee322be21797a"
     }
 }