Error on scheduled event

[tombruijn]

When running lintje with a scheduled event, it fails with this error:

 Error: Lintje failed with error: TypeError: Cannot read properties of undefined (reading 'length')
TypeError: Cannot read properties of undefined (reading 'length')
    at main (/home/runner/work/_actions/lintje/action/v0.11/dist/index.js:67455:37)

https://github.com/appsignal/appsignal-python/actions/runs/7496053602/job/20407364828

Could be that it receives no information about the last pushed commits on the branch. The action can either skip on the "schedule" event and do nothing, or lint the last commit.

• Schedule event details

Possible workaround, skip Lintje on schedule events: appsignal/appsignal-python#188