chore: Remove OZv3 NPM package and replace it with v5 package

[zguesmi]

No description provided.

[Copilot]

Pull Request Overview

This PR upgrades the OpenZeppelin contracts dependency from version 3.3.0 to ^5.0.2, a major version update spanning multiple major releases (3 → 5). The changes also clean up a duplicate Hardhat entry in the package-lock.json file.

• Updates @openzeppelin/contracts from 3.3.0 to ^5.0.2
• Updates corresponding lock file entries with new version, resolved URL, and integrity hash
• Removes duplicate Hardhat entry from package-lock.json

Reviewed Changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 1 comment.

File	Description
package.json	Updates OpenZeppelin contracts dependency version from 3.3.0 to ^5.0.2
package-lock.json	Updates resolved package metadata for @openzeppelin/contracts to v5.0.2, adds MIT license field, and removes duplicate Hardhat entry

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.32%. Comparing base (c7b8067) to head (59f9e1c).

Additional details and impacted files

@@                Coverage Diff                 @@
##           chore/solidity-v8     #318   +/-   ##
==================================================
  Coverage              96.32%   96.32%           
==================================================
  Files                     34       34           
  Lines                   1117     1117           
  Branches                 209      223   +14     
==================================================
  Hits                    1076     1076           
  Misses                    41       41           

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[zguesmi]

Pushed directly in #308