fix: require google-cloud-core >= 1.4.4 (#223)

* fix: Remove "six" dependency

* fix: Update google-cloud-core dependency

This avoids implicit dependency on "six"

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* Remove constraints for unsupported Python versions

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: vchudnov-g

setup.py

@@ -32,7 +32,7 @@
     # NOTE: Maintainers, please do not require google-cloud-core>=2.x.x
     # Until this issue is closed
     # https://github.com/googleapis/google-cloud-python/issues/10566
-    "google-cloud-core >= 1.3.0, < 3.0dev",
+    "google-cloud-core >= 1.4.4, < 3.0dev",
 ]
 extras = {}
 

testing/constraints-2.7.txt

@@ -19,4 +19,4 @@
 #
 # e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
 # Then this file should have foo==1.14.0
-google-cloud-core==1.3.0
+google-cloud-core==1.4.4