cmd/go/internal/modfetch: TestCodeRepo/gopkg.in_natefinch_lumberjack.v2/latest failing [1.19 backport]

[gopherbot]

@bcmills requested issue #58445 to be considered for backport to the next 1.19 minor release.

@gopherbot, please backport to Go 1.20 and 1.19. These tests are broken due to benign external changes.

[gopherbot]

Change https://go.dev/cl/466862 mentions this issue: [release-branch.go1.19] cmd/go: remove tests that assume lack of new versions of external modules

[gopherbot]

Closed by merging a16d489 to release-branch.go1.19.