Build(deps): Update frequenz-microgrid-component-graph requirement

Updates the requirements on [frequenz-microgrid-component-graph](https://github.com/frequenz-floss/frequenz-microgrid-component-graph-python) to permit the latest version.
- [Release notes](https://github.com/frequenz-floss/frequenz-microgrid-component-graph-python/releases)
- [Changelog](https://github.com/frequenz-floss/frequenz-microgrid-component-graph-python/blob/v0.x.x/RELEASE_NOTES.md)
- [Commits](frequenz-floss/frequenz-microgrid-component-graph-python@v0.2.0...v0.3.4)

---
updated-dependencies:
- dependency-name: frequenz-microgrid-component-graph
  dependency-version: 0.3.4
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -29,7 +29,7 @@ dependencies = [
   "marshmallow-dataclass >= 8.7.1, < 9",
   "asyncclick >= 8.3.0.4, < 9",
   "typing-extensions >= 4.14.1, < 5",
-  "frequenz-microgrid-component-graph >= 0.2.0, < 0.3",
+  "frequenz-microgrid-component-graph >= 0.2.0, < 0.4",
   "frequenz-client-assets >= 0.2.0, < 0.3",
 ]
 dynamic = ["version"]