Fix publishing packaging ERROR

The CI pipeline previously failed to publish the package
to PyPI because of a direct dependency on a git repository.

HTTPError: 400 Bad Request from https://upload.pypi.org/legacy/
Can't have direct dependency: frequenz-api-electricity-trading@
git+https://github.com/frequenz-floss/frequenz-api-electricity-trading@
8d89155. See https://packaging.python.org/specifications/core-metadata
for more information.

Signed-off-by: Daniel Zullo <daniel.zullo@frequenz.com>

pyproject.toml

@@ -32,7 +32,7 @@ dependencies = [
   "grpcio >= 1.60.0, < 2",
   "frequenz-channels >= 1.0.0, < 2",
   "frequenz-client-base[grpcio] >= 0.5.0, < 0.6.0",
-  "frequenz-api-electricity-trading @ git+https://github.com/frequenz-floss/frequenz-api-electricity-trading@8d89155",
+  "frequenz-api-electricity-trading >= 0.2.2, < 1",
 ]
 dynamic = ["version"]