chore(deps): update dependency viem to v2

Author: renovate[bot]

playgrounds/wagmi/package.json

@@ -13,6 +13,6 @@
     "@use-wagmi/nuxt": "^1.1.8",
     "nuxt": "^3.9.3",
     "use-wagmi": "^0.4.10",
-    "viem": "^1.21.4"
+    "viem": "^2.7.9"
   }
 }