Do not pin grpc dependencies

Pinning these dependencies to one version complicates
installation on different linux distributions.

Also this API runs against a tokio based API and thus
the backward guarantee commit doesn't apply.

Signed-off-by: Matthias Wende <[email protected]>

Author: matthias-wende-frequenz

pyproject.toml

@@ -6,13 +6,9 @@ requires = [
   "setuptools == 75.8.0",
   "setuptools_scm[toml] == 8.1.0",
   "frequenz-repo-config[api] == 0.11.0",
-  # We need to pin the protobuf, grpcio and  grpcio-tools dependencies to make
-  # sure the code is generated using the minimum supported versions, as older
-  # versions can't work with code that was generated with newer versions.
-  # https://protobuf.dev/support/cross-version-runtime-guarantee/#backwards
   "protobuf == 5.29.3",
-  "grpcio-tools == 1.70.0",
-  "grpcio == 1.70.0",
+  "grpcio-tools >= 1.71.0, < 2",
+  "grpcio >= 1.71.0, < 2",
 
 ]
 build-backend = "setuptools.build_meta"