Fix automation between TS SDK and Docs Hub

[arboleya]

When any PR is merged to master, CI triggers a workflow on the Docs Hub repo, which creates another PR for updating such docs. This PR, when approved, triggers a deploy routine that goes, updates, and redeploys the docs.

The aim here is to remove the manual approval step so that the docs are automatically updated with the latest releases every time a new PR goes to master. Check the flowchart at the end.

Given our previous interactions with the docs, we should lead this effort with DevRel.

flowchart TB;
  SDK(SDK) --> PR
  SDK --> Release
  PR{Merged PR} --> |updates| Nightly(Nightly Docs)
  Release{New Release} --> |updates| Stable(Stable Docs)

[arboleya]

cc @rishabhkeshan @calldelegation

[linear[bot]]

Marking this as blocked since the devrel team is doing a rewrite of the docs-hub, so waiting on that until that happens.