refactor: rename update.type -> update.updateType

lib/manager/docker/package.js

lib/manager/npm/post-update/index.js

lib/util/package-rules.js

lib/workers/branch/get-updated.js

lib/workers/branch/index.js

lib/workers/pr/index.js

lib/workers/repository/onboarding/pr/pr-list.js

lib/workers/repository/process/lookup/index.js

lib/workers/repository/process/lookup/rollback.js

lib/workers/repository/process/sort.js

lib/workers/repository/process/write.js

lib/workers/repository/updates/branchify.js

lib/workers/repository/updates/flatten.js

test/manager/docker/__snapshots__/package.spec.js.snap

test/manager/docker/package.spec.js

test/util/package-rules.spec.js

test/workers/branch/index.spec.js

test/workers/branch/lock-files/index.spec.js

test/workers/repository/onboarding/pr/pr-list.spec.js

...orkers/repository/process/__snapshots__/sort.spec.js.snap