fix(deps): update dependency zod to v4

Author: renovate[bot]

package.json

@@ -42,7 +42,7 @@
     "sharp": "^0.34.1",
     "stripe": "^18.1.0",
     "usehooks-ts": "^3.1.1",
-    "zod": "^3.24.4"
+    "zod": "^4.0.0"
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3",

yarn.lock

@@ -5883,7 +5883,7 @@ __metadata:
     tsx: "npm:^4.20.6"
     typescript: "npm:^5.8.3"
     usehooks-ts: "npm:^3.1.1"
-    zod: "npm:^3.24.4"
+    zod: "npm:^4.0.0"
   languageName: unknown
   linkType: soft
 
@@ -9333,10 +9333,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"zod@npm:^3.24.4":
-  version: 3.25.76
-  resolution: "zod@npm:3.25.76"
-  checksum: 10c0/5718ec35e3c40b600316c5b4c5e4976f7fee68151bc8f8d90ec18a469be9571f072e1bbaace10f1e85cf8892ea12d90821b200e980ab46916a6166a4260a983c
+"zod@npm:^4.0.0":
+  version: 4.3.6
+  resolution: "zod@npm:4.3.6"
+  checksum: 10c0/860d25a81ab41d33aa25f8d0d07b091a04acb426e605f396227a796e9e800c44723ed96d0f53a512b57be3d1520f45bf69c0cb3b378a232a00787a2609625307
   languageName: node
   linkType: hard