Rewrite to use saml2v5 #179

Job	Run time
PHP-Linter (8.2) / linter	13s
PHP-Linter (8.3) / linter	14s
PHP-Linter (8.1) / linter	13s
PHP-Linter (8.4) / linter	13s
Linter / json-linter	29s
Linter / yaml-linter	5s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.1, windows-latest	1m 2s
Unit tests, PHP 8.4, windows-latest	54s
Unit tests, PHP 8.3, windows-latest	1m 13s
Unit tests, PHP 8.3, ubuntu-latest	40s
Unit tests, PHP 8.1, ubuntu-latest	21s
Unit tests, PHP 8.4, ubuntu-latest	31s
Unit tests, PHP 8.2, windows-latest	54s
Unit tests, PHP 8.2, ubuntu-latest	22s
Quality control	35s
Code coverage	11s
Security checks	26s
Cleanup artifacts	4s
	8m 40s

Provide feedback