fix: bump jsonchema to resolve url.parse deprecation

[willmizzi]

Summary

Fixes #571.

Node v24 emits a [DEP0169] deprecation warning against consumers of ElectroDB because jsonschema@1.2.7 uses the legacy require('url').parse() API.

Upgrading to jsonschema@1.5.0 removes the url module entirely in favour of the WHATWG URL global, silencing the warning.

Changes

• package.json — bump jsonschema from 1.2.7 → 1.5.0.
• src/validations.js — pass the ModelBeta / Modelv1 schema objects directly to v.validate() instead of their URI strings ("/ModelBeta" / "/Modelv1").

More detail

jsonschema@1.5.0 updated the Validator.prototype.validate() entry point to reject anything that isn't an object or boolean:

// jsonschema/lib/validator.js
if ((typeof schema !== 'boolean' && typeof schema !== 'object') || schema === null) {
  throw new SchemaError('Expected `schema` to be an object or boolean');
}

Testing

• npm run test:types
• npm run test:unit
• ./test.sh

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