feat(deps): update dependencies zod from v3.25.67 to v4

Author: renovate[bot]

bun.lockb

@@ -12,7 +12,7 @@
   "dependencies": {
     "axios": "1.10.0",
     "lodash.mapkeys": "4.6.0",
-    "zod": "3.25.67"
+    "zod": "4.0.5"
   },
   "devDependencies": {
     "@octokit/webhooks": "14.1.0",