deps: Update dependency google-auth to v2.23.1 (#1555)

Author: renovate-bot

.kokoro/requirements.txt

@@ -211,9 +211,9 @@ google-api-core==2.12.0 \
     # via
     #   google-cloud-core
     #   google-cloud-storage
-google-auth==2.23.0 \
-    --hash=sha256:2cec41407bd1e207f5b802638e32bb837df968bb5c05f413d0fa526fac4cf7a7 \
-    --hash=sha256:753a26312e6f1eaeec20bc6f2644a10926697da93446e1f8e24d6d32d45a922a
+google-auth==2.23.1 \
+    --hash=sha256:9800802266366a2a87890fb2d04923fc0c0d4368af0b86db18edd94a62386ea1 \
+    --hash=sha256:d38bdf4fa1e7c5a35e574861bce55784fd08afadb4e48f99f284f1e487ce702d
     # via
     #   gcp-releasetool
     #   google-api-core