Expand range of acceptable protobuf versions (#36)

Author: pkrull-ansys

ansys/api/additive/VERSION

@@ -1 +1 @@
-1.6.0-dev7
+1.6.0-dev8

setup.py

@@ -39,7 +39,7 @@
         url=f"https://github.com/ansys/{package_name}",
         license="MIT",
         python_requires=">=3.8,<4",
-        install_requires=["grpcio~=1.47", "protobuf>=3.19,<5"],
+        install_requires=["grpcio~=1.47", "protobuf>=3.19,<6"],
         packages=setuptools.find_namespace_packages(
             ".", include=("ansys.*", "google.*")
         ),