Update all OTel upstream dependencies regularly and atomically

[ycombinator]

Describe the enhancement:
Automation (likely a custom script) that will regularly update upstream OTel dependencies

Describe a specific use case for the enhancement or feature:
We currently use Dependabot for managing updates of upstream OTel dependencies. Unfortunately, we've observed at times that not all such dependencies get updated in the same PR. A custom script would allows us to solve this problem.

What is the definition of done?

• A script that will run daily to check if a new version of upstream OTel dependencies has been released. If it has, the script will put up a PR containing the updates.
• All upstream OTel dependencies must be updated in a single PR.
• The PR should also include an update to the EDOT Collector README with new versions of the upstream OTel dependencies.
• Remove the Dependabot configuration that currently performs the (incomplete) updates.

[cmacknz]

We are also able to use Renovate if needed and it would handle this better.