chore: release 1.21.2 (#601)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

packages/google-auth/CHANGELOG.md

@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+### [1.21.2](https://www.github.com/googleapis/google-auth-library-python/compare/v1.21.1...v1.21.2) (2020-09-08)
+
+
+### Bug Fixes
+
+* migrate signBlob to iamcredentials.googleapis.com ([#600](https://www.github.com/googleapis/google-auth-library-python/issues/600)) ([694d83f](https://www.github.com/googleapis/google-auth-library-python/commit/694d83fd23c0e8c2fde27136d1b3f8f6db6338a6))
+
 ### [1.21.1](https://www.github.com/googleapis/google-auth-library-python/compare/v1.21.0...v1.21.1) (2020-09-03)
 
 

packages/google-auth/setup.py

@@ -33,7 +33,7 @@
 with io.open("README.rst", "r") as fh:
     long_description = fh.read()
 
-version = "1.21.1"
+version = "1.21.2"
 
 setup(
     name="google-auth",