fix(deps): add packaging requirement (#75)

Author: busunkim96

setup.py

@@ -43,6 +43,7 @@
         "google-api-core[grpc] >= 1.22.2, < 2.0.0dev",
         "grpc-google-iam-v1 >= 0.12.3, < 0.13.0",
         "proto-plus >= 1.10.0",
+        "packaging >= 14.3",
     ),
     python_requires=">=3.6",
     classifiers=[

testing/constraints-3.6.txt

@@ -8,3 +8,5 @@
 google-api-core==1.22.2
 grpc-google-iam-v1==0.12.3
 proto-plus==1.10.0
+packaging==14.3
+google-auth==1.24.0  # TODO: remove when google-auth>=1.25.0 si transitively required through google-api-core