Bump google-auth from 2.23.2 to 2.23.3 in /tests

Bumps [google-auth](https://github.com/googleapis/google-auth-library-python) from 2.23.2 to 2.23.3.
- [Release notes](https://github.com/googleapis/google-auth-library-python/releases)
- [Changelog](https://github.com/googleapis/google-auth-library-python/blob/main/CHANGELOG.md)
- [Commits](googleapis/google-auth-library-python@v2.23.2...v2.23.3)

---
updated-dependencies:
- dependency-name: google-auth
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

tests/requirements.txt

@@ -208,9 +208,9 @@ forcediphttpsadapter==1.1.0 \
     --hash=sha256:0d224cf6e8e50eb788c9f5994a7afa6d389bac6dbe540b7dfd77a32590ad0153 \
     --hash=sha256:5e7662ece61735585332d09b87d94fffe4752469d5c0d3feff48746e5d70744b
     # via -r requirements.txt
-google-auth==2.23.2 \
-    --hash=sha256:5a9af4be520ba33651471a0264eead312521566f44631cbb621164bc30c8fd40 \
-    --hash=sha256:c2e253347579d483004f17c3bd0bf92e611ef6c7ba24d41c5c59f2e7aeeaf088
+google-auth==2.23.3 \
+    --hash=sha256:6864247895eea5d13b9c57c9e03abb49cb94ce2dc7c58e91cba3248c7477c9e3 \
+    --hash=sha256:a8f4608e65c244ead9e0538f181a96c6e11199ec114d41f1d7b1bffa96937bda
     # via
     #   -r requirements.txt
     #   kubernetes