Update frequenz-client-base requirement

Updates the requirements on [frequenz-client-base](https://github.com/frequenz-floss/frequenz-client-base-python) to permit the latest version.
- [Release notes](https://github.com/frequenz-floss/frequenz-client-base-python/releases)
- [Changelog](https://github.com/frequenz-floss/frequenz-client-base-python/blob/v0.x.x/RELEASE_NOTES.md)
- [Commits](frequenz-floss/frequenz-client-base-python@v0.8.0...v0.9.0)

---
updated-dependencies:
- dependency-name: frequenz-client-base
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pyproject.toml

@@ -38,7 +38,7 @@ requires-python = ">= 3.11, < 4"
 dependencies = [
   "typing-extensions >= 4.6.1, < 5",
   "frequenz-api-dispatch == 1.0.0-rc1",
-  "frequenz-client-base >= 0.8.0, < 0.9.0",
+  "frequenz-client-base >= 0.8.0, < 0.10.0",
   "frequenz-client-common >= 0.1.0, < 0.4.0",
   "grpcio >= 1.66.1, < 2",
   "python-dateutil >= 2.8.2, < 3.0",