fix(deps): update dependency zod to v4.2.0 (#20)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -50,7 +50,7 @@
   "prettier": "@willbooster/prettier-config",
   "dependencies": {
     "front-matter": "4.0.2",
-    "zod": "4.1.13"
+    "zod": "4.2.0"
   },
   "devDependencies": {
     "@tsconfig/node24": "24.0.3",

yarn.lock

@@ -1884,7 +1884,7 @@ __metadata:
     typescript: "npm:5.9.3"
     typescript-eslint: "npm:8.49.0"
     vitest: "npm:4.0.15"
-    zod: "npm:4.1.13"
+    zod: "npm:4.2.0"
   languageName: unknown
   linkType: soft
 
@@ -9178,9 +9178,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"zod@npm:4.1.13":
-  version: 4.1.13
-  resolution: "zod@npm:4.1.13"
-  checksum: 10c0/d7e74e82dba81a91ffc3239cd85bc034abe193a28f7087a94ab258a3e48e9a7ca4141920cac979a0d781495b48fc547777394149f26be04c3dc642f58bbc3941
+"zod@npm:4.2.0":
+  version: 4.2.0
+  resolution: "zod@npm:4.2.0"
+  checksum: 10c0/c9fa563f4866f5554c84728f69fe01979d5ab41a104176a4b9f1a182fa670b6e55ffe1be81863dc03d8b36c90ee9e917353b429f4aa3615b5f63dc4c8d5d92d3
   languageName: node
   linkType: hard