fix(deps): require google-api-core>=1.31.5, >=2.3.2 (#126)

Author: parthea

setup.py

@@ -49,7 +49,7 @@
         # NOTE: Maintainers, please do not require google-api-core>=2.x.x
         # Until this issue is closed
         # https://github.com/googleapis/google-cloud-python/issues/10566
-        "google-api-core[grpc] >= 1.28.0, <3.0.0dev",
+        "google-api-core[grpc] >= 1.31.5, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.0",
         "proto-plus >= 1.15.0",
         "grafeas >= 1.1.2",
     ),

testing/constraints-3.6.txt

@@ -4,6 +4,6 @@
 # Pin the version to the lower bound.
 # e.g., if setup.py has "google-cloud-foo >= 1.14.0, < 2.0.0dev",
 # Then this file should have google-cloud-foo==1.14.0
-google-api-core==1.28.0
+google-api-core==1.31.5
 proto-plus==1.15.0
 grafeas==1.1.2