chore: ensure that `package` exists in `affected` property in generators #188

Job	Run time
generate-cran-versions	57s
generate-debian-versions	3m 9s
generate-maven-versions	15s
generate-packagist-versions	8s
generate-pypi-versions	11s
generate-rubygems-versions	5s
test-semantic	24s
	5m 9s

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