Bump google-auth from 1.26.1 to 1.27.0 in /requirements (#16574)

Bumps [google-auth](https://github.com/googleapis/google-auth-library-python) from 1.26.1 to 1.27.0.
- [Release notes](https://github.com/googleapis/google-auth-library-python/releases)
- [Changelog](https://github.com/googleapis/google-auth-library-python/blob/master/CHANGELOG.md)
- [Commits](googleapis/google-auth-library-python@v1.26.1...v1.27.0)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements/prod.txt

@@ -456,9 +456,9 @@ zipp==3.4.0 \
 google-cloud-bigquery==2.8.0 \
     --hash=sha256:ba0827a75a0f524a69cc1a6d4d788fae23c39ee01bd2ce8d4e14d9585ce2fb6e \
     --hash=sha256:c4c43f7f440d6e5bb2895d21122af5de65b487ea2c69cea466a516bb826ab921
-google-auth==1.26.1 \
-    --hash=sha256:8ce6862cf4e9252de10045f05fa80393fde831da9c2b45c39288edeee3cde7f2 \
-    --hash=sha256:1b461d079b5650efe492a7814e95c536ffa9e7a96e39a6d16189c1604f18554f
+google-auth==1.27.0 \
+    --hash=sha256:d3640ea61ee025d5af00e3ffd82ba0a06dd99724adaf50bdd52f49daf29f3f65 \
+    --hash=sha256:da5218cbf33b8461d7661d6b4ad91c12c0107e2767904d5e3ae6408031d5463e
 google-api-core==1.26.0 \
     --hash=sha256:002e44c533299aecd9dd265d200f9eacd9957cddd2c72e2cd1cb5cea127e972d \
     --hash=sha256:4230ec764d48ca934fe69b85cc217e31e844e176f68df93e252acd55350e730b