Log Message:
gce_metadata_server: update to 3.91.0

This version compiles with Go 1.23.

v3.91.0

  * bump dependency
  * add mtlsTokenSource
  * add mtls example

v3.9.1

  * add mtls support
  * bump dependency

v3.8.1

  * upgrade tpm signer; use tpm policy callback function

v3.8.0

  * use tpm-direct; support pcr and password policy for TPM; support
    TPM bus encryption
  * Merge pull request #43 from octu0/topic-remove-binary
  * Merge pull request #42 from octu0/topic-handle-maintenance-event
  * add maintenance-event
  * fix workflow branch
  * bump dependency
  * typo/fix config file
  * add prometheus metrics endpoint
  * add python env-var docs
  * add process credential references

v3.7.0

  * use TokenSource uniformly; TPMPath reference for oauth2 and tpm-jwt
  * update to use oauth2 tokensource

v3.6.0

  * update salrashdi123/oauth2, golang-jwt-tpm
  * allow dynamic scopes; update tpm token to use salrashid123/oauth2;

v3.5.0

  * add configFile listener; ETag support
  * show gpg verification

3.4.0

  * update docs; godocs; goreleaser; images; add tests
  * refactor with support for fakes
  * update readme; remove flavor logline
  * update samples
  * Update README.md
  * fix build target
  * add bazel build