fix: ACNA-3467 - set npm engine in package.json for dependabot

[amulyakashyap09]

Description

Set npm engine in package.json for dependabot

Getting this issue now : Dependabot does not support your npm version. Because of this, Dependabot cannot update this pull request.
Due to Dependabot will no longer support npm v6https://github.blog/changelog/2025-01-20-dependabot-will-no-longer-support-npm-v6/#:~:text=If%20you%20continue%20to%20use,is%20the%20newest%20supported%20release.We need to upgrade npm.

Related Issue

ACNA-3467

Motivation and Context

How Has This Been Tested?

• npm install && npm run posttest && npm test

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have signed the Adobe Open Source CLA.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (2988b81) to head (9b7ebbb).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master       #99   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           26        26           
  Lines          730       730           
  Branches       104       104           
=========================================
  Hits           730       730           

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