* GH Actions: selectively use `fail-fast` with setup-php

I've seen some recent build failures due to the `setup-php` action running into a rate limit and not downloading the required version of Composer. In the case of this action, that would make the test runs worthless.

The `setup-php` action runner defaults to _showing_ these type errors in the logs, but not stopping the workflow run.

So, specifically for those jobs where the Composer version is important, I'm adding the `fail-fast` option to `setup-php` to fail the build if the action runner ran into any errors.

Ref: https://github.com/shivammathur/setup-php#fail-fast-optional

* GH Actions: update PHP version for `composer-normalize`

Looks like the `composer-normalize` package has dropped support for PHP < 8.0 as of version `2.29.0`.

Refs:
* https://github.com/ergebnis/composer-normalize/releases/tag/2.29.0
* ergebnis/composer-normalize#998

Co-authored-by: jrfnl <[email protected]>

The `actions/cache` package has released version 4.0 which updates the action runner to use Node 20.

Applying this fix gets rid of the following warning which is currently showing in the "Annotations" of workflows using the `ramsey/composer-install` action:
```
Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
```

Note: most action runners have published these types of update in a new major, so that seems to be the best practice. Not sure if this update warrants a new major for `ramsey/composer-install` ?

Refs:
* https://github.com/actions/cache/releases/tag/v4.0.0
* https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

Co-authored-by: jrfnl <[email protected]>

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v3...v4)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Add require lock file input parameter

* Inspect composer_command instead

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3...v4)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Co-authored-by: Christopher Georg <[email protected]>

This reverts commit 0b4a7fe.

This avoids any potential backwards-compatibility issues that might
arise when using self-hosted runners that use Node.js 16 instead of
version 20.

For more details, see the discussion here:
#252

The `actions/cache` package has released version 4.0 which updates the action runner to use Node 20.

Applying this fix gets rid of the following warning which is currently showing in the "Annotations" of workflows using the `ramsey/composer-install` action:
```
Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/cache@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.
```

Note: most action runners have published these types of update in a new major, so that seems to be the best practice. Not sure if this update warrants a new major for `ramsey/composer-install` ?

Refs:
* https://github.com/actions/cache/releases/tag/v4.0.0
* https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

Co-authored-by: jrfnl <[email protected]>