script to update all email domains

[SumithThota]

PR Description: Update User Email Domain in ServiceNow

This script finds all users in the sys_user table whose email addresses contain an old domain (e.g. bad_domain.com) and replaces it with a new domain (e.g. new_domain.com) using regular expressions.

---

Purpose

To bulk–update user email domains safely and efficiently without manual edits.

Example use case:
When your organization migrates from @bad_domain.com to @new_domain.com, this script updates all users automatically.

---

Example

Old Email	New Email
alice@bad_domain.com	alice@new_domain.com
bob@bad_domain.com	bob@new_domain.com
carol@bad_domain.com	carol@new_domain.com

Pull Request Checklist

Overview

• Put an x inside of the square brackets to check each item.
• I have read and understood the CONTRIBUTING.md guidelines
• My pull request has a descriptive title that accurately reflects the changes and the description has been filled in above.
• I've included only files relevant to the changes described in the PR title and description
• I've created a new branch in my forked repository for this contribution

Code Quality

• My code is relevant to ServiceNow developers
• My code snippets expand meaningfully on official ServiceNow documentation (if applicable)
• I've disclosed use of ES2021 features (if applicable)
• I've tested my code snippets in a ServiceNow environment (where possible)

Repository Structure Compliance

• I've placed my code snippet(s) in one of the required top-level categories:
  • Core ServiceNow APIs/
  • Server-Side Components/
  • Client-Side Components/
  • Modern Development/
  • Integration/
  • Specialized Areas/
• I've used appropriate sub-categories within the top-level categories
• Each code snippet has its own folder with a descriptive name

Documentation

• I've included a README.md file for each code snippet
• The README.md includes:
  • Description of the code snippet functionality
  • Usage instructions or examples
  • Any prerequisites or dependencies
  • (Optional) Screenshots or diagrams if helpful

Restrictions

• My PR does not include XML exports of ServiceNow records
• My PR does not contain sensitive information (passwords, API keys, tokens)
• My PR does not include changes that fall outside the described scope

[ravichandra1998g]

looks good to me