Fix Github Pull Request Event

[dbpolito]

Fixing an error on Pull Request Event that for some reason i missed...

TypeError: undefined is not an object (evaluating 'payload.pull_request')
      at src/cli/cmd/github.ts:414:14
      at src/cli/cmd/github.ts:387:36
      at src/cli/bootstrap.ts:10:30
      at fn (src/cli/bootstrap.ts:8:9)
      at src/project/instance.ts:36:45
      at run (node:async_hooks:62:22)
      at processTicksAndRejections (unknown:7:39)

I also tested the Schedule event and seems to be working just fine too.

[rekram1-node]

/review

[github-actions]

Minor suggestion: The WorkflowRunEvent import was added but workflow_run is not in SUPPORTED_EVENTS (line 130). Consider removing this unused import, or if you plan to support workflow_run events in the future, you may want to add it to the supported events array. This is a very minor nit and the code will work fine either way.

[dbpolito]

schedule event triggers WorkflowRunEvent

[github-actions]

lgtm