message: README: update for release of PHP 8.2
  I also realized that - while not mentioned in the changelog or the readme - PHP 8.3 _is_ already available via the `setup-php` action runner, so I've added it to the README now.
  Ref:
diff: @@ -118,13 +118,14 @@ On all supported OS/Platforms the following PHP versions are supported as per th
  | `7.1` | `Stable` | `End of life` | `GitHub-hosted`, `self-hosted` |
  | `7.2` | `Stable` | `End of life` | `GitHub-hosted`, `self-hosted` |
  | `7.3` | `Stable` | `End of life` | `GitHub-hosted`, `self-hosted` |
  -| `7.4` | `Stable` | `Security fixes only` | `GitHub-hosted`, `self-hosted` |
  -| `8.0` | `Stable` | `Active` | `GitHub-hosted`, `self-hosted` |
  +| `7.4` | `Stable` | `End of life` | `GitHub-hosted`, `self-hosted` |
  +| `8.0` | `Stable` | `Security fixes only` | `GitHub-hosted`, `self-hosted` |
  | `8.1` | `Stable` | `Active` | `GitHub-hosted`, `self-hosted` |
  -| `8.2` | `Nightly` | `In development` | `GitHub-hosted`, `self-hosted` |
  +| `8.2` | `Stable` | `Active` | `GitHub-hosted`, `self-hosted` |
  +| `8.3` | `Nightly` | `In development` | `GitHub-hosted`, `self-hosted` |
  **Notes:**
  -- Specifying `8.2` in `php-version` input installs a nightly build of `PHP 8.2.0-dev`. See [nightly build setup](#nightly-build-setup) for more information.
  +- Specifying `8.3` in `php-version` input installs a nightly build of `PHP 8.3.0-dev`. See [nightly build setup](#nightly-build-setup) for more information.
  - To use JIT on `PHP 8.0` and above, refer to the [JIT configuration](#jit-configuration) section.
  ## :heavy_plus_sign: PHP Extension Support
  