Handle retries and improve performance

[kishaningithub]

Context

I am using this to sync files across ~600 repos. When performing this operation, after ~35 minutes of serialised run the action failed with the following error

Error: patterns.0 redacted-org/redacted-repo - HttpError: other side closed

Proposals

• When HttpError: other side closed happens perform a retry of the failed request keeping into account github's rate limiting headers in their api response
• After a 35 minute run, only ~ 100 repos completed synchronisation. I think there is scope for performance improvement.

[kishaningithub]

Github API Rate limits must also be gracefully handled

Error: patterns.0 redacted-org/redacted-repo - Compare commits error: HttpError: API rate limit exceeded for user.