Folders starting with a `.` are not excluded from zip

[henrywright]

Hi and thank you for this cool action.

Below is my exclusions argument. Both .git and .github are folders and they aren't excluded when the zip is created. The rest are files and they are excluded.

exclusions: composer.json composer.lock .editorconfig .git .github .gitignore .phpcs.xml.dist phpstan.neon.dist