Make it compatible with PHP 8.4 (version 0.4.3)

[eclipxe13]

• Fix compatibility with PHP 8.4.
• Allow dependence of eclipxe/cfdiutils to match versions ^2.31 and ^3.0.
• Update license year to 2025.

These changes apply to the development environment:

• Update code standards for phpcs and php-cs-fixer.
• Add PHP 8.4 to test matrix.
• Run workflows jobs using PHP 8.4.
• Fix workflow job composer-normalize. It didn't fail on composer.json errors.
• Update development tools.