Test xs:string for valid characters according to the XML 1.1 specific… #1318

Job	Run time
Linter / json-linter	28s
PHP-Linter (8.4) / linter	14s
PHP-Linter (8.5) / linter	10s
PHP-Linter (8.3) / linter	10s
Linter / yaml-linter	6s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.3, ubuntu-latest	29s
Unit tests, PHP 8.4, windows-latest	1m 10s
Unit tests, PHP 8.5, windows-latest	1m 7s
Unit tests, PHP 8.3, windows-latest	1m 16s
Unit tests, PHP 8.4, ubuntu-latest	23s
Unit tests, PHP 8.5, ubuntu-latest	31s
Quality control	27s
Security checks	25s
Code coverage	11s
Cleanup artifacts	6s
	7m 13s

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