chore(deps): bump zod from 3.25.76 to 4.2.1 in /mcp-server

[dependabot]

Bumps zod from 3.25.76 to 4.2.1.

Release notes

Sourced from zod's releases.

v4.2.1

Commits:

• 5b5b129315fbc94a3b0d6244185eaeefcbe438d1 4.2.1

v4.2.0

Features

Implement Standard JSON Schema

standard-schema/standard-schema#134

Implement z.fromJSONSchema()

const jsonSchema = {
  type: "object",
  properties: {
    name: { type: "string" },
    age: { type: "number" }
  },
  required: ["name"]
};
const schema = z.fromJSONSchema(jsonSchema);

Implement z.xor()

const schema = z.xor(
  z.object({ type: "user", name: z.string() }),
  z.object({ type: "admin", role: z.string() })
);
// Exactly one of the schemas must match

Implement z.looseRecord()

const schema = z.looseRecord(z.string(), z.number());
// Allows additional properties beyond those defined

Commits:

• af49c084f66339110d00e37ff71dc7b3b9f2b7ef Update docs for JSON Schema conversion of z.undefined() (#5504)
• 767f320318986e422f524b939f1a7174544fda2e Add .toJSONSchema() method (#5477)
• e17dcb63573397063e87d7c7fe10a5a78968181a Add z.fromJSONSchema(), z.looseRecord(), z.xor() (#5534)

... (truncated)

Commits

• 5b5b129 4.2.1
• dcef973 v4.2.0
• e17dcb6 Add z.fromJSONSchema(), z.looseRecord(), z.xor() (#5534)
• d632df3 Update next
• 767f320 Add .toJSONSchema() method (#5477)
• 325a701 Add pullfrog.yml workflow
• 4972727 Update Next.js and React Flight RCE advisory (#5515)
• af49c08 Update docs for JSON Schema conversion of z.undefined() (#5504)
• fb66ee1 fix(mini): export ZodMiniJSONSchema types to prevent TS4023 (#5511)
• 6e968a3 Add convex-helpers to the ecosystem docs (#5470)
• Additional commits viewable in compare view

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