chore: release 1.28.0

Author: release-please[bot]

CHANGELOG.md

@@ -4,6 +4,18 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+## [1.28.0](https://www.github.com/googleapis/google-auth-library-python/compare/v1.27.1...v1.28.0) (2021-03-13)
+
+
+### Features
+
+* allow the AWS_DEFAULT_REGION environment variable ([#721](https://www.github.com/googleapis/google-auth-library-python/issues/721)) ([199da47](https://www.github.com/googleapis/google-auth-library-python/commit/199da4781029916dc075738ec7bd173bd89abe54))
+
+
+### Bug Fixes
+
+* fix unit tests so they can work in g3 ([#714](https://www.github.com/googleapis/google-auth-library-python/issues/714)) ([d80c85f](https://www.github.com/googleapis/google-auth-library-python/commit/d80c85f285ae1a44ddc5a5d94a66e065a79f6d19))
+
 ### [1.27.1](https://www.github.com/googleapis/google-auth-library-python/compare/v1.27.0...v1.27.1) (2021-02-26)
 
 

setup.py

@@ -37,7 +37,7 @@
 with io.open("README.rst", "r") as fh:
     long_description = fh.read()
 
-version = "1.27.1"
+version = "1.28.0"
 
 setup(
     name="google-auth",