deps: update dependency google-auth to v2.11.1 (#755)

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Author: renovate-bot

.kokoro/requirements.txt

@@ -140,9 +140,9 @@ google-api-core==2.10.1 \
  # via
  # google-cloud-core
  # google-cloud-storage
-google-auth==2.11.0 \
- --hash=sha256:be62acaae38d0049c21ca90f27a23847245c9f161ff54ede13af2cb6afecbac9 \
- --hash=sha256:ed65ecf9f681832298e29328e1ef0a3676e3732b2e56f41532d45f70a22de0fb
+google-auth==2.11.1 \
+ --hash=sha256:516e6623038b81430dd062a1a25ecd24f173d7c15cdf4e48a9e78bc87e97aeec \
+ --hash=sha256:53bdc0c2b4e25895575779caef4cfb3a6bdff1b7b32dc38a654d71aba35bb5f8
  # via
  # gcp-releasetool
  # google-api-core