2.5.0

• Add support for phing. Closes #275

- name: Setup PHP with phing
  uses: shivammathur/setup-php@v2
  with:
    php-version: '7.4'
    tools: phing

• Add support to install intl extension with different ICU versions for PHP 5.6 to PHP 7.4 on Ubuntu.
  ICU 50.2 and newer versions are supported. Refer to ICU builds for the specific versions supported. Closes #282.

- name: Setup PHP with intl and ICU 67.1
  uses: shivammathur/setup-php@v2
  with:
    php-version: '7.4'
    extensions: intl-67.1

• Add printf to PATH if not found in Windows.
• Add status page badge in README.
• Revert to Powershell PhpManager to install PHP 8 on Windows. (Ref: mlocati/powershell-phpmanager#62).
• Switch from tags to releases and use release assets to get Powershell PhpManager.
• Fix regex in protoc.sh.
• Fix installing extensions from Dotdeb PPA for PHP 5.4 and PHP 5.5. Ref: #281.
• Fix removing extensions for Ubuntu self-hosted runners.
• Replace fedora references with a valid platform name to validate against process.platform.
• Refactor tools.ts and win32.ps1.
• Bump Typescript version to 4.0.1.

Thanks @mlocati for the contributions 🎉