Bump order-book from 0.6.0 to 0.6.1 (#1030)

Bumps [order-book](https://github.com/bmoscon/orderbook) from 0.6.0 to 0.6.1.
- [Release notes](https://github.com/bmoscon/orderbook/releases)
- [Changelog](https://github.com/bmoscon/orderbook/blob/main/CHANGES.md)
- [Commits](https://github.com/bmoscon/orderbook/commits)

---
updated-dependencies:
- dependency-name: order-book
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -3,7 +3,7 @@ aiofile>=2.0.0
 aiohttp>=3.9.4
 cchardet
 cython
-order_book==0.6.0
+order_book==0.6.1
 pyyaml
 requests>=2.18.4
 uvloop