Loosen grpcio versioning and update README (#149)

* ni-measurement-service: Update grpcio versioning strategy

* ni-measurement-service: Update Poetry lock

* README.md: Update grpcio/protobuf versions

* ni-measurement-service: Add comment about grpcio-tools version

* README.md: Update protobuf max version

* niscope_acquire_waveform: Revert pyproject.toml

* ni-measurement-service: Clarify pyproject.toml comment

Author: bkeryan

README.md

@@ -31,8 +31,8 @@ MeasurementLink Support for Python (`ni-measurement-service`) is a python framew
 ## Dependencies
 
 - Python >= 3.8 [(3.9 recommended)](https://www.python.org/downloads/release/python-3913/)
-- [grpcio = 1.41.1](https://pypi.org/project/grpcio/1.41.1/)
-- [protobuf = 3.19.1](https://pypi.org/project/protobuf/3.19.1/)
+- [grpcio >= 1.41.1, < 2.x](https://pypi.org/project/grpcio/1.41.1/)
+- [protobuf >= 3.20, < 4.x](https://pypi.org/project/protobuf/3.20.0/)
 - [pywin32 >= 303 (Only for Windows)](https://pypi.org/project/pywin32/303/)
 
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