Upgrades zod from v3 to v4

[aaronchilcott]

This change updates the zod dependency from v3 to v4.

Primarily this impacts drizzle-kit and drizzle-zod, however, there are also indirect impacts on some of the examples in drizzle-orm.

This is PR 1 of 2 aimed at resolving #4570. This branch is purely about upgrading zod to v4 while the other branch introduces new the new functionality which will resolve #4570 entirely. This approach of two PRs is intended to simplify the review process, I feel it will be clearer for the reviewer(s) to understand the upgrade and the improvements if they are kept separate.

Changelogs

Because I wasn't certain which release version these changes would go in to, here are the changelogs:

drizzle-orm

# Improvements

## Migrates zod to v4

The following impacts have been addressed to support the migration to zod v4 for the packages: drizzle-zod and drizzle-kit

### Changes

**drizzle-zod** (v0.8.0)
 - peerDependencies: `"zod": ">=4.0.0"`
 - devDependencies: `"zod": "^4.1.1"`
 - Files: drizzle-zod/package.json:68,79

**drizzle-kit** (v0.32.0)
 - devDependencies: `"zod": "^4.1.12"`
 - Files: drizzle-kit/package.json:116
 - Heavy internal usage in validation and serialization modules

**drizzle-orm** (v0.40.0)
 - devDependencies: `"zod": "^4.0.0"`
 - Files: drizzle-orm/package.json:204

**integration-tests**
 - dependencies: `"zod": "^4.1.1"`
 - Files: integration-tests/package.json:79

**examples/libsql**
 - dependencies: `"zod": "^4.1.1"`
 - Files: examples/libsql/package.json:22
 - Updated Dependencies: `@hono/zod-validator: ^0.4.1`, `znv: ^0.5.0`

### Out of date package-lock.json regeneration

These examples had zod 3.x references in their package-lock.json files from transitive dependencies. All lock files have been regenerated.

Note: These examples don't directly depend on zod. The old zod 3.x references were from transitive dependencies through drizzle-kit. After regenerating lock files, they now pull the latest drizzle-kit which uses Zod 4.x.

**examples/pg-proxy**
 - package-lock.json

**examples/mysql-proxy**
 - package-lock.json

**examples/better-sqlite3**
 - package-lock.json

**examples/aws-lambda**
 - package-lock.json

drizzle-zod

# Improvements

## Updates Zod version from v3 to v4

Upgrades the zod dependency from v3 to v4 while remaining backward compatible with previous versions.

drizzle-kit

# Improvements

## Updates Zod version from v3 to v4

Upgrades the zod dependency from v3 to v4 while remaining backward compatible with previous versions.

### Deprecated `.strict()` method has been omitted from modernisation steps 

`.strict()` is the only functionality to be skipped when modernising the code utilising zod. This is because the rewrite 
of drizzle-kit in #4439 may mean this work is discarded in later releases. `.strict()` requires quite a bit of work to
align it with the v4 API and doing so will also void backward compatibility.