feat(deps): remove Node.js 20

[MikeMcC399]

Situation

Node.js 20.x transitioned into End-of-life status on April 30, 2026.

Change

This PR removes Node.js 20:

• from the matrix of tested nodes under .github/workflows/example-node-versions.yml
• from the README > Examples section
• from the README > Node.js > Support section

and adds the change to the CHANGELOG.

Comments

• Although there is no change to the action itself, this PR triggers a minor version release in order to republish the README to the npm registry for reference. It also provides a release milestone for reference in the CHANGELOG.

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Note

Low Risk
Low risk: changes are limited to CI workflow and documentation updates removing Node.js 20 from tested/supported examples, with no runtime code changes.

Overview
Removes Node.js 20 from the Node version matrices used in the example-node-versions workflow and README examples, aligning examples with current supported Node versions (22, 24, 25).

Updates the README Node support text/links and adds a v7.2.0 CHANGELOG entry documenting end of support for Node.js 20.

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[github-actions]

🎉 This PR is included in version 7.2.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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