Bump google-auth from 2.31.0 to 2.32.0 in /tests in the python group (#6023)

Bumps the python group in /tests with 1 update: [google-auth](https://github.com/googleapis/google-auth-library-python).


Updates `google-auth` from 2.31.0 to 2.32.0
- [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@v2.31.0...v2.32.0)

---
updated-dependencies:
- dependency-name: google-auth
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jakub Jarosz <[email protected]>

Author: dependabot[bot]

tests/requirements.txt

@@ -215,9 +215,9 @@ forcediphttpsadapter==1.1.0 \
     --hash=sha256:0d224cf6e8e50eb788c9f5994a7afa6d389bac6dbe540b7dfd77a32590ad0153 \
     --hash=sha256:5e7662ece61735585332d09b87d94fffe4752469d5c0d3feff48746e5d70744b
     # via -r requirements.txt
-google-auth==2.31.0 \
-    --hash=sha256:042c4702efa9f7d3c48d3a69341c209381b125faa6dbf3ebe56bc7e40ae05c23 \
-    --hash=sha256:87805c36970047247c8afe614d4e3af8eceafc1ebba0c679fe75ddd1d575e871
+google-auth==2.32.0 \
+    --hash=sha256:49315be72c55a6a37d62819e3573f6b416aca00721f7e3e31a008d928bf64022 \
+    --hash=sha256:53326ea2ebec768070a94bee4e1b9194c9646ea0c2bd72422785bd0f9abfad7b
     # via
     #   -r requirements.txt
     #   kubernetes