update test suite to using SOAP messages #199

Job	Run time
Linter / ecmascript-linter	-1s
PHP-Linter (8.4) / linter	10s
PHP-Linter (8.1) / linter	11s
PHP-Linter (8.2) / linter	11s
PHP-Linter (8.3) / linter	14s
Linter / style-linter	-1s
Linter / json-linter	31s
Linter / yaml-linter	5s
Unit tests, PHP 8.4, windows-latest	1m 2s
Unit tests, PHP 8.1, windows-latest	1m 3s
Unit tests, PHP 8.2, windows-latest	49s
Unit tests, PHP 8.2, ubuntu-latest	24s
Unit tests, PHP 8.4, ubuntu-latest	19s
Unit tests, PHP 8.1, ubuntu-latest	23s
Unit tests, PHP 8.3, ubuntu-latest	25s
Unit tests, PHP 8.3, windows-latest	1m 0s
Quality control	31s
Security checks	22s
Code coverage	10s
Cleanup artifacts	4s
	7m 52s

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