chore: grant write permissions for contents to launcher build workflows #242

Job	Run time
Pre-commit hooks	19s
Backend Tests	1m 2s
Backend ruff + mypy	47s
Frontend Tests	44s
Plugin Tests (bibliogon-plugin-kinderbuch)	18s
Plugin Tests (bibliogon-plugin-translation)	22s
Plugin Tests (bibliogon-plugin-audiobook)	26s
Plugin Tests (bibliogon-plugin-grammar)	19s
Plugin Tests (bibliogon-plugin-kdp)	18s
Plugin Tests (bibliogon-plugin-help)	15s
Plugin Tests (bibliogon-plugin-export)	20s
Plugin Tests (bibliogon-plugin-ms-tools)	22s
Plugin Tests (bibliogon-plugin-getstarted)	18s
	5m 50s

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