Update delay method to use native timers

[YotamZiv298]

The delay method currently uses a polyfill for node-abort-controller that's only needed for Node.js versions < 15.4.0. This adds unnecessary dependency and complexity to the codebase since we're targeting modern Node.js versions.

Describe the solution you'd like

• Remove the node-abort-controller polyfill
• Update the delay function to use native setTimeout from node:timers/promises
• Add proper TypeScript configuration to support modern Node.js module resolution
• Set minimum Node.js version requirement to ≥15.4.0 in package.json

Describe alternatives you've considered

• Keep backwards compatibility by checking Node.js version at runtime
• Use native Promise with setTimeout instead of timers/promises
• Maintain the polyfill for older Node.js versions support

Additional context
The change requires updating @types/node from v12 to at least v16 and configuring proper module resolution in tsconfig.json to support the node: protocol.

Reference files affected:

• src/utils.ts

Suggested change:

import { setTimeout as setTimeoutPromises } from 'node:timers/promises';

export function delay(
  ms: number,
  abortController?: AbortController,
): Promise<void> {
  return setTimeoutPromises<undefined>(ms, undefined, {
    signal: abortController?.signal,
  });
}

[YotamZiv298]

Will create a pull request on solving that issue after pull request #3067 will be merged.