chore: downgrade superstruct to 1.0.3

We do use a resolution for this to make sure @metamask/utils also uses
the 1.0.3 (and avoid having different versions of superstruct, that
might cause typing issues see like:
https://github.com/MetaMask/chain-api/actions/runs/8836209841/job/24262243391?pr=1)

package.json

@@ -40,9 +40,12 @@
     "test": "jest && jest-it-up",
     "test:watch": "jest --watch"
   },
+  "resolutions": {
+    "superstruct@^1.0.3": "1.0.3"
+  },
   "dependencies": {
     "@metamask/utils": "^8.4.0",
-    "superstruct": "^1.0.3"
+    "superstruct": "1.0.3"
   },
   "devDependencies": {
     "@lavamoat/allow-scripts": "^3.0.0",

yarn.lock

@@ -6328,10 +6328,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"superstruct@npm:^1.0.3":
-  version: 1.0.4
-  resolution: "superstruct@npm:1.0.4"
-  checksum: 10/9b3fd70a08c5ad3ea78b5c6b7ab90d31dde71af10448208d296c3d29ba2e55dfd817dfef75957163ee032163d04c4b2e0cb2fddff30313516aa60f748c1a48da
+"superstruct@npm:1.0.3":
+  version: 1.0.3
+  resolution: "superstruct@npm:1.0.3"
+  checksum: 10/632b6171ac136b6750e62a55f806cc949b3dbf2b4a7dc70cc85f54adcdf19d21eab9711f04e8a643b7dd622bbd8658366ead924f467adaccb2c8005c133b7976
   languageName: node
   linkType: hard