Add frequenz-client-microgrid >= 0.9.1 dependency to pyproject.toml

Co-authored-by: Marenz <[email protected]>

Author: Copilot

=0.9.1

@@ -40,6 +40,7 @@ dependencies = [
   "frequenz-api-dispatch >= 1.0.0-rc3, < 2",
   "frequenz-client-base >= 0.11.0, < 0.12.0",
   "frequenz-client-common >= 0.3.6, < 0.4.0",
+  "frequenz-client-microgrid >= 0.9.1, < 1.0.0",
   "frequenz-core >= 1.0.2, < 2.0.0",
   "grpcio >= 1.72.1, < 2",
   "python-dateutil >= 2.8.2, < 3.0",