Update simplesamlphp/saml2-legacy requirement from ~4.18.1 to ~4.19.0 in the production-dependencies group #168

Job	Run time
Linter / style-linter	-1s
Linter / ecmascript-linter	-1s
PHP-Linter (8.1) / linter	15s
PHP-Linter (8.3) / linter	8s
PHP-Linter (8.2) / linter	16s
Linter / json-linter	43s
Linter / yaml-linter	4s
PHP-Linter (8.4) / linter	9s
Unit tests, PHP 8.2, ubuntu-latest	29s
Unit tests, PHP 8.4, ubuntu-latest	18s
Unit tests, PHP 8.1, ubuntu-latest	24s
Unit tests, PHP 8.3, ubuntu-latest	19s
Unit tests, PHP 8.1, windows-latest	58s
Unit tests, PHP 8.3, windows-latest	53s
Unit tests, PHP 8.2, windows-latest	55s
Unit tests, PHP 8.4, windows-latest	59s
Security checks	22s
Code coverage	7s
Quality control	33s
Cleanup artifacts	3s
	7m 53s

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