refactor: ExternalHostError (#6563)

lib/config/presets/github/index.ts

lib/config/presets/gitlab/__snapshots__/index.spec.ts.snap

lib/config/presets/gitlab/index.spec.ts

lib/config/presets/gitlab/index.ts

lib/config/presets/index.ts

lib/constants/error-messages.ts

lib/datasource/cdnjs/index.spec.ts

lib/datasource/cdnjs/index.ts

lib/datasource/common.ts

lib/datasource/crate/__snapshots__/index.spec.ts.snap

lib/datasource/crate/index.ts

lib/datasource/dart/__snapshots__/index.spec.ts.snap

lib/datasource/dart/index.ts

lib/datasource/docker/index.spec.ts

lib/datasource/docker/index.ts

lib/datasource/galaxy/__snapshots__/index.spec.ts.snap

lib/datasource/galaxy/index.ts

lib/datasource/gradle-version/index.ts

lib/datasource/helm/__snapshots__/index.spec.ts.snap

lib/datasource/helm/index.ts