Run goimports

[JamieMagee]

Order imports into:

• standard library
• dependencies
• internal modules

[Copilot]

Pull request overview

This PR standardizes Go import formatting by running goimports, ensuring imports are grouped into standard library, third-party dependencies, and local/internal modules.

Changes:

• Reordered and regrouped imports across multiple Go files to match goimports conventions.
• Inserted/adjusted blank lines between import groups (std / third-party / internal).
• Removed trailing whitespace/extra blank lines where applicable.

Reviewed changes

Copilot reviewed 41 out of 41 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
proxy_test.go	Import grouping/order adjusted to separate third-party and internal imports.
proxy.go	Import grouping/order adjusted (std vs deps vs internal).
main.go	Import grouping/order adjusted; removed trailing blank lines at EOF.
logging.go	Import grouping/order adjusted to keep internal imports in the local group.
internal/oidc/oidc_credential_test.go	Import grouping/order adjusted.
internal/oidc/oidc_credential.go	Import grouping/order adjusted.
internal/metrics/handler.go	Import grouping/order adjusted.
internal/metrics/collector_client_test.go	Import grouping/order adjusted.
internal/metrics/collector_client.go	Import grouping/order adjusted.
internal/logging/logging.go	Import grouping/order adjusted.
internal/handlers/test_helpers.go	Import grouping/order adjusted.
internal/handlers/terraform_registry_test.go	Import grouping/order adjusted.
internal/handlers/terraform_registry.go	Import grouping/order adjusted.
internal/handlers/rubygems_server.go	Import grouping/order adjusted.
internal/handlers/python_index.go	Import grouping/order adjusted.
internal/handlers/pub_repository.go	Import grouping/order adjusted.
internal/handlers/oidc_handling_test.go	Import grouping/order adjusted.
internal/handlers/nuget_feed_test.go	Import grouping/order adjusted.
internal/handlers/nuget_feed.go	Import grouping/order adjusted.
internal/handlers/npm_registry.go	Import grouping/order adjusted.
internal/handlers/maven_repository.go	Import grouping/order adjusted.
internal/handlers/hex_repository.go	Import grouping/order adjusted.
internal/handlers/hex_organization.go	Import grouping/order adjusted.
internal/handlers/helm_registry.go	Import grouping/order adjusted.
internal/handlers/goproxy_server_handler.go	Import grouping/order adjusted.
internal/handlers/github_api_test.go	Import grouping/order adjusted.
internal/handlers/github_api.go	Import grouping/order adjusted.
internal/handlers/git_server_test.go	Import grouping/order adjusted.
internal/handlers/git_server.go	Import grouping/order adjusted (std imports reordered).
internal/handlers/docker_registry_test.go	Import grouping/order adjusted.
internal/handlers/docker_registry.go	Import grouping/order adjusted.
internal/handlers/dependabot_api.go	Import grouping/order adjusted.
internal/handlers/composer.go	Import grouping/order adjusted.
internal/handlers/cargo_registry.go	Import grouping/order adjusted.
internal/handlers/azdo_api_test.go	Import grouping/order adjusted.
internal/handlers/azdo_api.go	Import grouping/order adjusted.
internal/dialer/dialer.go	Import grouping/order adjusted.
internal/cache/handlers_test.go	Import grouping/order adjusted.
internal/cache/handlers.go	Import grouping/order adjusted.
internal/apiclient/client_test.go	Import grouping/order adjusted.
internal/apiclient/client.go	Import grouping/order adjusted.