Upgrade `go-github` to `v72`

[radar07]

Describe the feature or problem you’d like to solve

Upgrade go-github to v72

Proposed solution

Add go-github/v72 as a dependency to the project. Use go-github/v72 for the Github client. If there is any incompatibility we can go back to v69.

Additional context

This also helps in incorporating latest features of go-github which will resolve #409