Node.js 14 moved into end-of-life status on April 30, 2023 and is therefore no longer officially supported. The versions which are currently supported by Node.js according to their Release schedule are now 16, 18, 19 and 20.

This PR takes account of this Node.js status change and it removes Node.js 14 ...

• from the list of versions which .github/workflows/example-node-versions.yml tests

• from the list Node.js Support of supported versions for the action

All examples in the README file which use a matrix of Node.js versions are moved to the consistent set:

```yml
    strategy:
    matrix:
        node: [16, 18, 19, 20]
```

The Node.js Support section is moved to near the bottom of the README file above the section Changelog to which it relates. Some more detail is added to the table concerning when certain Node.js version additions and removals were made.

There is no change to the action itself which continues to use node16 as its running environment, therefore these changes are not breaking changes. node16 is the current latest available version for GitHub JavaScript actions.

(The next status change for Node.js is planned for June 1, 2023, when Node.js 19 enters end-of-life.)

References

• Node.js Release schedule
• GitHub runs.using for JavaScript actions