3.8.4 PHP 8.4 and v13 TypolinkParameter support

What's Changed

• [TASK] Define explicit nullable types for compatibility with PHP 8.4 by @koehnlein in #168
• [FEATURE] Support for TypolinkParameter objects in TYPO3 v13 by @s2b in #165

New Contributors

• @koehnlein made their first contribution in #168

Full Changelog: 3.8.3...3.8.4