chore: release 1.33.0 (#800)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d04dad5..5ccadc4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,25 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+## [1.33.0](https://www.github.com/googleapis/google-auth-library-python/compare/v1.32.1...v1.33.0) (2021-07-14)
+
+
+### Features
+
+* define `CredentialAccessBoundary` classes ([#793](https://www.github.com/googleapis/google-auth-library-python/issues/793)) ([d883921](https://www.github.com/googleapis/google-auth-library-python/commit/d883921ae8fdc92b2c2cf1b3a5cd389e1287eb60))
+* define `google.auth.downscoped.Credentials` class ([#801](https://www.github.com/googleapis/google-auth-library-python/issues/801)) ([2f5c3a6](https://www.github.com/googleapis/google-auth-library-python/commit/2f5c3a636192c20cf4c92c3831d1f485031d24d2))
+* service account is able to use a private token endpoint ([#784](https://www.github.com/googleapis/google-auth-library-python/issues/784)) ([0e26409](https://www.github.com/googleapis/google-auth-library-python/commit/0e264092e35ac02ad68d5d91424ecba5397daa41))
+
+
+### Bug Fixes
+
+* fix fetch_id_token credential lookup order to match adc ([#748](https://www.github.com/googleapis/google-auth-library-python/issues/748)) ([c34452e](https://www.github.com/googleapis/google-auth-library-python/commit/c34452ef450c42cfef37a1b0c548bb422302dd5d))
+
+
+### Documentation
+
+* fix code block formatting in 'user-guide.rst' ([#794](https://www.github.com/googleapis/google-auth-library-python/issues/794)) ([4fd84bd](https://www.github.com/googleapis/google-auth-library-python/commit/4fd84bdf43694af5107dc8c8b443c06ba2f61d2c))
+
 ### [1.32.1](https://www.github.com/googleapis/google-auth-library-python/compare/v1.32.0...v1.32.1) (2021-06-30)
 
 
diff --git a/google/auth/version.py b/google/auth/version.py
index 2ffa8a4..e74f1e7 100644
--- a/google/auth/version.py
+++ b/google/auth/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.32.1"
+__version__ = "1.33.0"