Align currently supported Node.js version

[nikeee]

New Issue Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.
• I can reproduce the issue with the latest versions of Parse Server and the Parse JS SDK.

Issue Description

According to the readme, parse follows the supported node versions:

Parse JS SDK is continuously tested with the most recent releases of Node.js to ensure compatibility.
We follow the Node.js Long Term Support plan and only
test against versions that are officially supported and have not reached their end-of-life date.

We should align the repository with the currently supported Node.js versions: https://github.com/nodejs/Release

Steps to reproduce

Install parse when using Node.js 20 or 21. Get an engine warning:

npm WARN EBADENGINE Unsupported engine {
npm WARN EBADENGINE   package: 'parse@4.3.1',
npm WARN EBADENGINE   required: { node: '>=14.21.0 <17 || >=18 <20' },
npm WARN EBADENGINE   current: { node: 'v21.4.0', npm: '10.2.1' }
npm WARN EBADENGINE }

Actual Outcome

Expected Outcome

According to the readme, no warning should occur.

Environment

• Node: v21.4.0
• parse@4.3.1

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[parseplatformorg]

🎉 This change has been released in version 5.0.0-alpha.1

[parseplatformorg]

🎉 This change has been released in version 5.0.0-beta.1

[parseplatformorg]

🎉 This change has been released in version 5.0.0