fix(repoChecker): unintended alarms

[kishore03109]

Problem

due to logging of the simple git operation, this triggered other alarms. since this is not a critical flow, fail silently.

also, running the check using the form in parallel to reduce the number of errors that has occured (when i tried running this in prod yesterday, the git.lock file kept perventing the commits from occuring. this is a problem since the form was used for observability, and this would lead to the reports not being committed to remote)

Tests

• [ ] once in staging, use the form to run the checker on multiple repos in efs
• [ ] notice the lack of "SiteCheckerError" AND the lack of "failed to push some refs". this is important as to not create alarms

[mergify[bot]]

⚠️ The sha of the head commit of this PR conflicts with #1177. Mergify cannot evaluate rules on this PR. ⚠️