Add 1-3 merge-files to .gitignore #149

Job	Run time
Linter / json-linter	24s
Linter / yaml-linter	6s
PHP-Linter (8.4) / linter	9s
PHP-Linter (8.5) / linter	13s
PHP-Linter (8.3) / linter	12s
Linter / ecmascript-linter	0s
Linter / style-linter	0s
Unit tests, PHP 8.3, windows-latest	1m 11s
Unit tests, PHP 8.3, ubuntu-latest	35s
Unit tests, PHP 8.4, ubuntu-latest	25s
Unit tests, PHP 8.4, windows-latest	1m 2s
Unit tests, PHP 8.5, windows-latest	58s
Unit tests, PHP 8.5, ubuntu-latest	32s
Code coverage	6s
Quality control	34s
Security checks	1m 33s
Cleanup artifacts	3s
	8m 3s

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