Update pinned protobuf and grpc dependency versions

Signed-off-by: Stefan Brus <[email protected]>

pyproject.toml

@@ -10,9 +10,9 @@ requires = [
    # 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 == 4.25.3",
-   "grpcio-tools == 1.51.1",
-   "grpcio == 1.51.1",
+   "protobuf == 5.28.2",
+   "grpcio-tools == 1.66.1",
+   "grpcio == 1.66.1",
 
 ]
 build-backend = "setuptools.build_meta"