Update to bookkeeper client 4.16.1 (#111)

The new BK client is now working with newer version of Grpc, so we can upgrade and use Grpc >1.37 which comes with pre-packaged binaries.

Author: merlimat

setup.py

@@ -80,8 +80,8 @@ def build_extension(self, ext):
 extras_require["functions"] = sorted(
     {
       "protobuf>=3.6.1,<=3.20.3",
-      "grpcio<1.28,>=1.8.2",
-      "apache-bookkeeper-client>=4.9.2",
+      "grpcio>=1.8.2",
+      "apache-bookkeeper-client>=4.16.1",
       "prometheus_client",
       "ratelimit"
     }