onlyLastTag not working

[HenKun]

https://github.com/heinrichreimer/action-github-changelog-generator/blob/22661924db8a133532edb412177e092b5e804efd/entrypoint.sh#L27

If onlyLastTag option is used, the action fails with fatal: Not a valid object name

It works when the quotes are removed from "$(git rev-list --tags --skip=1 --max-count=1)"

[spaskhalov]

If anyone mess with that problem , just try to checkout with fetch-depth: 0, before generate change log step.

 uses: actions/checkout@v2
       with:      
        fetch-depth: 0