enable auto-approve and auto-merge for pull bot

[anshbansal]

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[treff7es]

Can you give a bit more context what is this pr about?

[github-actions]

Unit Test Results (build & test)

622 tests  ±0   618 ✔️ ±0   15m 50s ⏱️ -18s
158 suites ±0       4 💤 ±0 
158 files   ±0       0 ❌ ±0 

Results for commit 357f8fb. ± Comparison against base commit 3cd0d3d.

[anshbansal]

@treff7es Whenever a change happens in datahub-project/datahub there is a bot that creates a PR which you might have noticed https://github.com/acryldata/datahub/pulls?q=is%3Apr+is%3Aclosed+label%3A%22%3Aarrow_heading_down%3A+pull%22

I am trying to auto-merge the PR because it is just doing a sync between the upstream and this repository. It needs an approval and someone needs to go in and click this "Enable auto-merge" for the PR to be auto-merged

Basically I am trying to automatically merge from upstream to this repository.