Version 3.0.0

Version 3.0.0

This is a fork of https://github.com/florianv/exchanger
Changes compared to the original 2.8.2:

• Fixed compatibility with modern symfony version (thanks @arokettu, florianv#168)
• Fixed compatibility with PHP8.4 (thanks @Chris53897, florianv#166)
• Fixed compatibility with PHPUnit 10 (@Chris53897, florianv#161)
• Improved EuropeanCentralBank provider (@uldisn, florianv#162)
• Fixed problem with Central Bank of Czechia provider on Windows