test: fix lint (#12551)

lib/config/decrypt.spec.ts

lib/config/index.spec.ts

lib/config/migration.spec.ts

lib/config/presets/index.spec.ts

lib/config/validation.spec.ts

lib/datasource/bitbucket-tags/index.spec.ts

lib/datasource/clojure/index.spec.ts

lib/datasource/go/releases-goproxy.spec.ts

lib/datasource/helm/index.spec.ts

lib/datasource/index.spec.ts

lib/datasource/maven/index.spec.ts

lib/datasource/metadata.spec.ts

lib/datasource/npm/get.spec.ts

lib/datasource/nuget/index.spec.ts

lib/datasource/orb/index.spec.ts

lib/datasource/repology/index.spec.ts

lib/logger/index.spec.ts

lib/manager/bundler/gemfile.spec.ts

lib/manager/bundler/host-rules.spec.ts

lib/manager/bundler/locked-version.spec.ts