Update sdks-common-config orb to v4.6.1 (#4063)

### Motivation

Keep CI on the latest shared orb release:
[v4.6.1](https://github.com/RevenueCat/sdks-circleci-orb/releases/tag/v4.6.1).

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> One-line CI orb version bump with no application or security logic
changes. Shared orb jobs used by this pipeline may still change behavior
depending on 4.6.1.
> 
> **Overview**
> Bumps the CircleCI `revenuecat/sdks-common-config` orb from `4.6.0` to
`4.6.1` so CI uses the latest shared SDK config.
> 
> <sup>Reviewed by [Cursor Bugbot](https://cursor.com/bugbot) for commit
df553827ff509056a701626493e156ec592c06eb. Bugbot is set up for automated
code reviews on this repo. Configure
[here](https://www.cursor.com/dashboard/bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Co-authored-by: Cursor <cursoragent@cursor.com>