bump ethers for replay support

emizzle · emizzle · commit 9df64e900b6c · 2023-09-13T16:10:13.000+10:00
diff --git a/vendor/nim-ethers b/vendor/nim-ethers
@@ -1 +1 @@
-Subproject commit a4a06ca2c09aec82e0bdad5f31b4110c48785056
+Subproject commit 18ef40868d991aed7d6d697c667a08b3d148659e
