refactor(fs): Remove `proxies.ts` file (#16325)

lib/modules/datasource/crate/index.ts

lib/modules/manager/cargo/artifacts.spec.ts

lib/modules/manager/cocoapods/artifacts.spec.ts

lib/modules/manager/npm/detect.spec.ts

lib/modules/manager/npm/detect.ts

lib/modules/manager/nuget/artifacts.ts

lib/modules/manager/terraform/lockfile/hash.ts

lib/util/cache/repository/impl/local.spec.ts

lib/util/cache/repository/impl/local.ts

lib/util/cache/repository/index.spec.ts

lib/util/fs/index.spec.ts

lib/util/fs/index.ts

lib/util/fs/proxies.ts

lib/workers/global/config/parse/file.ts

lib/workers/global/config/parse/index.spec.ts

lib/workers/global/config/parse/index.ts