Regenerated the reference JSON files, because the GF180MCU reference file had a commit hash for the I/O library that does not exist (and I'm not sure why).

diff --git a/VERSION b/VERSION
index 77f8e86..5d166d7 100644
--- a/VERSION
+++ b/VERSION

@@ -1 +1 @@
-1.0.545
+1.0.546

diff --git a/gf180mcu/gf180mcu.json b/gf180mcu/gf180mcu.json
index c4000f5..abc2100 100644
--- a/gf180mcu/gf180mcu.json
+++ b/gf180mcu/gf180mcu.json

@@ -90,12 +90,12 @@
         "magic": "MAGIC_COMMIT"
     },
     "reference": {
-        "open_pdks": "a80ed405766c5d4f21c8bfca84552a7478fe75b2",
-        "magic": "0022c502c8a406d1d565e4dc2236498093ef1314",
+        "open_pdks": "033872fcb033df5003674b6eca87109bb20ef291",
+        "magic": "5de118b7626cf74084078d888f3e95af1f2e689f",
         "gf180mcu_pdk": "a897aa30369d3bcec87d9d50ce9b01f320f854ef",
         "gf180mcu_fd_pr": "faef89e8c1b392733c32820a7b12e3a3847cc18c",
         "gf180mcu_fd_pv": "10ee7fc75437edafa56f29f2b1872e95c9f22b71",
-        "gf180mcu_fd_io": "dff0f7f47e406550dcba9b609d3fd3decd3a4367",
+        "gf180mcu_fd_io": "1d291daa9368bd404c71ff768b3f2e073b62f298",
         "gf180mcu_fd_sc_mcu7t5v0": "8743b6f9641eb8707179c4e51703380d4dc90f16",
         "gf180mcu_fd_sc_mcu9t5v0": "e0e80f5a6522f10b82165d3aeab9b8ee28e89849",
         "gf180mcu_fd_ip_sram": "9c411928870ce15226228fa52ddb6ecc0ea4ffbe",

diff --git a/sky130/sky130.json b/sky130/sky130.json
index d73000b..bcbdc84 100644
--- a/sky130/sky130.json
+++ b/sky130/sky130.json

@@ -94,8 +94,8 @@
         "magic": "MAGIC_COMMIT"
     },
     "reference": {
-        "open_pdks": "a80ed405766c5d4f21c8bfca84552a7478fe75b2",
-        "magic": "0022c502c8a406d1d565e4dc2236498093ef1314",
+        "open_pdks": "033872fcb033df5003674b6eca87109bb20ef291",
+        "magic": "5de118b7626cf74084078d888f3e95af1f2e689f",
         "sky130_fd_pr": "1232782c1b9fab3aacda74d67ce7c92bf7da8105",
         "sky130_fd_io": "e60737bf624df95c211fe99c007ddec78e3e081d",
         "sky130_fd_sc_hs": "c4cfcd760f1964f1670a1ed99c71c7c12b7ad49f",