Bump zod from 3.25.76 to 4.3.6

Bumps [zod](https://github.com/colinhacks/zod) from 3.25.76 to 4.3.6.
- [Release notes](https://github.com/colinhacks/zod/releases)
- [Commits](colinhacks/zod@v3.25.76...v4.3.6)

---
updated-dependencies:
- dependency-name: zod
  dependency-version: 4.3.6
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.yarn/install-state.gz

@@ -45,7 +45,7 @@
     "node-fetch": "^2.7.0",
     "winston": "^3.18.3",
     "yn": "^5.1.0",
-    "zod": "^3.25.76"
+    "zod": "^4.3.6"
   },
   "devDependencies": {
     "@backstage/cli": "^0.36.0",

package.json

@@ -2376,7 +2376,7 @@ __metadata:
     typescript: "npm:^5.9.3"
     winston: "npm:^3.18.3"
     yn: "npm:^5.1.0"
-    zod: "npm:^3.25.76"
+    zod: "npm:^4.3.6"
   languageName: unknown
   linkType: soft
 
@@ -15830,7 +15830,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"zod@npm:^3.25.76 || ^4.0.0":
+"zod@npm:^3.25.76 || ^4.0.0, zod@npm:^4.3.6":
   version: 4.3.6
   resolution: "zod@npm:4.3.6"
   checksum: 10/25fc0f62e01b557b4644bf0b393bbaf47542ab30877c37837ea8caf314a8713d220c7d7fe51f68ffa72f0e1018ddfa34d96f1973d23033f5a2a5a9b6b9d9da01