Add missing bcmath-dependency #1127

Job	Run time
Security checks	13s
Quality control	19s
Linter / json-linter	24s
Linter / ecmascript-linter	0s
PHP-Linter (8.4) / linter	11s
PHP-Linter (8.1) / linter	18s
PHP-Linter (8.2) / linter	14s
Linter / yaml-linter	5s
PHP-Linter (8.3) / linter	10s
Linter / style-linter	0s
Unit tests, PHP 8.2, ubuntu-latest	20s
Unit tests, PHP 8.1, ubuntu-latest	23s
Unit tests, PHP 8.4, ubuntu-latest	15s
Unit tests, PHP 8.1, windows-latest	48s
Unit tests, PHP 8.3, ubuntu-latest	21s
Unit tests, PHP 8.2, windows-latest	1m 1s
Unit tests, PHP 8.4, windows-latest	50s
Unit tests, PHP 8.3, windows-latest	51s
Code coverage	6s
Cleanup artifacts	3s
	6m 52s

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