chore(deps): update dependency google-auth to v2.43.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
google-auth	==2.41.1 -> ==2.43.0

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Release Notes

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

v2.43.0

Compare Source

Features

• Add public wrapper for _mtls_helper.check_use_client_cert which enables mTLS if GOOGLE_API_USE_CLIENT_CERTIFICATE is not set, when the MWID/X.509 cert sources detected (#​1859) Add public wrapper for check_use_client_cert which enables mTLS if
  GOOGLE_API_USE_CLIENT_CERTIFICATE is not set, when the MWID/X.509 cert
  sources detected. Also, fix check_use_client_cert to return boolean
  value.
  Change #​1848 added the check_use_client_cert method that helps know if
  client cert should be used for mTLS connection. However, that was in a
  private class, thus, created a public wrapper of the same function so
  that it can be used by python Client Libraries. Also, updated
  check_use_client_cert to return a boolean value instead of existing
  string value for better readability and future scope.
  --------- (1535eccbff0ad8f3fd6a9775316ac8b77dca66ba)
• Enable mTLS if GOOGLE_API_USE_CLIENT_CERTIFICATE is not set, if the MWID/X.509 cert sources detected (#​1848) The Python SDK will use a hybrid approach for mTLS enablement:

• If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable is set
  (either true or false), the SDK will respect that setting. This is
  necessary for test scenarios and users who need to explicitly control
  mTLS behavior.
• If the GOOGLE_API_USE_CLIENT_CERTIFICATE environment variable is not
  set, the SDK will automatically enable mTLS only if it detects Managed
  Workload Identity (MWID) or X.509 Workforce Identity Federation (WIF)
  certificate sources. In other cases where the variable is not set, mTLS
  will remain disabled.
  ** This change also adds the helper method check_use_client_cert and
  it's unit test, which will be used for checking the criteria for setting
  the mTLS to true
  ** This change is only for Auth-Library, other changes will be created
  for Client-Library use-cases.
  --------- (395e405b64b56ddb82ee639958c2e8056ad2e82b)

• onboard google-auth to librarian (#​1838) This PR onboards google-auth library to the Librarian system.
  Wait for
  #​1819. (c503eaa511357d7a76cc1e1f1d3a3be2dabd5bca)

v2.42.1

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Bug Fixes

• Catch ValueError for json.loads() (#​1842) (b074cad)

v2.42.0

Compare Source

Features

• Add trust boundary support for external accounts. (#​1809) (36ecb1d)

Bug Fixes

• Read scopes from ADC json for impersoanted cred (#​1820) (62c0fc8)

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