chore: Deprecate support for Node.js 20

[lahirumaramba]

Node.js 20 has reached EOL. Deprecate support for Node.js 20

[gemini-code-assist]

Code Review

This pull request updates the Node.js version requirements in the documentation, deprecating support for Node.js 18 and 20 while encouraging the use of Node.js 22. A review comment pointed out an inconsistency in the contributor prerequisites, suggesting that Node.js 22 should be required instead of Node.js 18 to align with the project's updated environment support.

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CONTRIBUTING.md (90)

There is an inconsistency between this change and the PR's objective. The PR aims to deprecate Node.js 20, yet this line sets the minimum prerequisite for contributors to Node.js 18. If Node.js 20 is indeed being deprecated in favor of Node.js 22 (as stated in the README), the contributor prerequisites should be updated to Node.js 22 to ensure a modern development environment and consistency with the project's direction.

1. Node.js 22 or higher.

[jonathanedey]

LGTM, Thanks!