chore(deps): update dependency google-auth to v2.48.0

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
google-auth	==2.45.0 → ==2.48.0

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Release Notes

googleapis/google-auth-library-python (google-auth)

v2.48.0

Compare Source

Features

• add cryptography as required dependency (#​1929) (52558ae2881b1e6555f6f5c0d76365c15807ead9)
• Support the mTLS IAM domain for Certificate based Access (#​1938) (8dcf91a1b05c85fbbd0bcee78d66e498099102ab)
• add configurable GCE Metadata Server retries (#​1488) (454b441b478ec62bbf1a6ad5bceb6c7cbbfd0c37)
• honor NO_GCE_CHECK environment variable (#​1610) (383c9827536d9376e8248370ce4c2b83e468d027)

Bug Fixes

• resolve circular imports (#​1942) (25c1b064545702cbef087cfcd15fbbb6ef1af74f)
• removes content-header from AWS IMDS get request (#​1934) (97bfea9e02ede953fc8ee154e0deed3a3cfc6dcc)
• detect correct auth when ADC env var is set but empty (#​1374) (bfc07e1050bd0aa86fa3b08cdf70c9b68b5fe6a2)
• replace deprecated utcfromtimestamp (#​1799) (e431f20cf73ccac71926a23ec454468cea92e053)
• Use user_verification=preferred for ReAuth WebAuthn challenge (#​1798) (3f88a24089c4ee6822d510de0db210b54260d873)

v2.47.0

Compare Source

Features

• drop cachetools dependency in favor of simple local implementation (#​1590) (5c07e1c4f52bc77a1b16fa3b7b3c5269c242f6f4)

Bug Fixes

• Python 3.8 support (#​1918) (60dc20014a35ec4ba71e8065b9a33ecbdbeca97a)

v2.46.0

Compare Source

Documentation

• update urllib3 docstrings for v2 compatibility (#​1903) (3f1aeea2d1014ea1d244a4c3470e52d74d55404b)

Features

• Recognize workload certificate config in has_default_client_cert_source for mTLS for Agentic Identities (#​1907) (0b9107d573123e358c347ffa067637f992af61b4)

Bug Fixes

• add types to default and verify_token and Request init based on comments in the source code. (#​1588) (59a5f588f7793b59d923a4185c8c07738da618f7)
• fix the document of secure_authorized_session (#​1536) (5d0014707fc359782df5ccfcaa75fd372fe9dce3)
• remove setup.cfg configuration for creating universal wheels (#​1693) (c767531ce05a89002d109f595187aff1fcaacfb7)
• use .read() instead of .content.read() in aiohttp transport (#​1899) (12f4470f808809e8abf1141f98d88ab720c3899b)
• raise RefreshError for missing token in impersonated credentials (#​1897) (94d04e090fdfc61926dd32bc1d65f8820b9cede5)
• Fix test coverage for mtls_helper (#​1886) (02e71631fe275d93825c2e957e830773e75133f7)

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[dpebot]

/gcbrun

[gemini-code-assist]

Summary of Changes

Hello @renovate-bot, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request updates the google-auth Python library to its latest stable version, 2.47.0. This update incorporates a range of improvements, including dependency streamlining, enhanced Python 3.8 compatibility, new features related to mTLS for Agentic Identities, and various bug fixes and documentation updates from the upstream library.

Highlights

• Dependency Update: The google-auth dependency has been updated from version 2.45.0 to 2.47.0 in vpc-sample/requirements.txt.
• Performance & Dependency Reduction: Version 2.47.0 of google-auth removes the cachetools dependency, opting for a simpler local implementation, which can reduce the overall dependency footprint.
• Python 3.8 Support: A bug fix for Python 3.8 support has been included in google-auth version 2.47.0.
• mTLS for Agentic Identities: Version 2.46.0 introduces a feature to recognize workload certificate configuration for mTLS when dealing with Agentic Identities.
• Bug Fixes and Type Improvements: Several bug fixes and type annotation improvements were included in google-auth version 2.46.0, addressing issues like aiohttp transport handling, impersonated credential token refreshing, and documentation accuracy.

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[gemini-code-assist]

Code Review

This PR updates the google-auth dependency to v2.47.0. The update itself is a safe and beneficial minor version bump. However, during the review, I identified a more critical issue in the project's configuration that should be addressed. The vpc-sample/Dockerfile specifies FROM python:3.14-slim. Python 3.14 is not a stable release, and using a pre-release version introduces unnecessary risk and potential for instability. This is also inconsistent with tests.cloudbuild.yaml, which specifies the python311 runtime. To ensure a stable and reproducible environment, I strongly recommend changing the base image in the Dockerfile to a stable version that matches your intended runtime, such as python:3.11-slim.

[dpebot]

/gcbrun