Bump cpp-example-collection from 7abd4b9 to 90f13f1

Bumps [cpp-example-collection](https://github.com/livekit-examples/cpp-example-collection) from `7abd4b9` to `90f13f1`.
- [Commits](livekit-examples/cpp-example-collection@7abd4b9...90f13f1)

---
updated-dependencies:
- dependency-name: cpp-example-collection
  dependency-version: 90f13f11a081281924f1bffc5d2eda4182e5e544
  dependency-type: direct:production
...

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Author: dependabot[bot]