build(deps): bump golang.org/x/oauth2 from 0.21.0 to 0.27.0 in /samples/client/petstore/go

[dependabot]

Bumps golang.org/x/oauth2 from 0.21.0 to 0.27.0.

Commits

• 681b4d8 jws: split token into fixed number of parts
• 3f78298 all: upgrade go directive to at least 1.23.0 [generated]
• 109dabf endpoints: add links/provider for Discord
• ac571fa oauth2: fix docs for Config.DeviceAuth
• 314ee5b endpoints: add patreon endpoint
• b9c813b google: add warning about externally-provided credentials
• 49a531d all: make method and struct comments match the names
• 22134a4 README: don't recommend go get
• 3e64809 x/oauth2: add Token.ExpiresIn
• 16a9973 jwt: rename example to avoid vet error
• Additional commits viewable in compare view

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Summary by cubic

Upgrade golang.org/x/oauth2 to v0.27.0 in the Petstore Go sample and align the module with Go 1.23.0 to match upstream requirements.

• Dependencies

  • Bumped golang.org/x/oauth2 from 0.21.0 to 0.27.0.
  • Raised module go version to 1.23.0.
  • Updated github.com/stretchr/testify to v1.10.0 and refreshed indirect test deps.
  • Cleaned go.sum and removed unused modules.

• Migration

  • Requires Go 1.23+. Update your local toolchain before building the sample.

^{Written for commit cf19259. Summary will update on new commits.}

[dependabot]

Looks like golang.org/x/oauth2 is up-to-date now, so this is no longer needed.